new gdb needs wmempcpy, give it to it.

Fix visibility of various C99 features, esp. for C++11.

Limit wcslcat, wcslcpy visibility to _NETBSD_SOURCE
wcswidth, wcwidth to POSIX.1-2001 or _NETBSD_SOURCE

Updated patch from kretschm in PR standards/39422

branches: 1.42.8; 1.42.12; 1.42.14;
Import wcsnlen(3) to libc

The wcsnlen(3) function conforms to POSIX.1-2008 and is an addition to the
ISO C standard.

size_t wcsnlen(const wchar_t *s, size_t maxlen);

The wcsnlen(3) function computes the number of wide-characters in a wide-
-string to which s points, not including NULL terminating wide-character
code and checking no more than maxlen wide-characters. This function never
examines wide-characters beyond a wide-string of maxlen size.


This function is a safer version of wcslen(3):

size_t wcslen(const wchar_t *s);


Update STANDARDS section of wmemchr(3) describing wide-character functions.

branches: 1.41.2;
add open_{,w}memstream

Expose properly vfwscanf and friends for POSIX_SOURCE >= 200112L

Add nl_langinfo_l, catopen_l and wcsftime_l.

Add mbsnrtowcs and wcsnrtombs. Approved by core.

More __BEGIN_DECLS / __END_DECLS wrappers.

Add scanf_l and wscanf_l families.

Add explicit locale versions for the printf family. Replace asprintf,
snprintf and sprintf with simple wrappers around the corresponding
va_list functions to reduce code duplication.

Add wcscoll_l, wcsxfrm_l, wcsncasecmp_l, wcscasecmp_l, btowc_l,
mbrlen_l, mbsinit_l, mbsrtowcs_l, wcrtomb_l, wcsrtombs_l and wctob_l.

Add wcstof_l, wcstod_l and wcstold_l.

Add support for wcstoimax_l and friends.

Also add prototypes for wcwidth_l and wcswidth_l.

branches: 1.30.2; 1.30.4; 1.30.8;
Retire varargs.h support. Move machine/stdarg.h logic into MI
sys/stdarg.h and expect compiler to provide proper builtins, defaulting
to the GCC interface. lint still has a special fallback.
Reduce abuse of _BSD_VA_LIST_ by defining __va_list by default and
derive va_list as required by standards.

1. {wctype,wctrans,mbstate}_t: switch MD to MI like other
libc implementation (such as *BSD and glibc2).

2. don't typedef void * wc{type,trans}_t, suggested by soda@-san.
it may pass through compiler type check, it's harmful.
so i introduce dummy struct __tag_wc{type,trans}_t(iconv_t already does).

no ABI change was made.

branches: 1.28.2;
Don't define wchar_t for c++; it is native in the language. From Alexander
Nasonov

branches: 1.27.8; 1.27.10; 1.27.18;
Remove clause 3 and 4 from TNF licenses

branches: 1.26.16;
PR/34238: Aleksey Cheusov: add wcsdup, wcscasecmp and wcsncasecmp functions

branches: 1.25.2;
add c99 wcstof(3) and wcstold(3).
requested by skrll AT netbsd DOT org, thanks.

bump libc minor 138 -> 139.

add t_putws

Wide stdio functions.

PR/29826: J. T. Conklin: Add wcsftime(3) (from FreeBSD)

branches: 1.21.2;
de-__P -- the hack is long since useless. Discussed with christos,
matt, kleink, others. Approved by christos.

C99: Provide WCHAR_{MAX,MIN} via <machine/wchar_limits.h> (we'll also
provide WINT_{MAX,MIN} along with it).
Fixes PR standards/24040 from Masao Uebayashi.

prototype must not have variable name

Add a new feature-test macro, _NETBSD_SOURCE. If this is defined
by the application, all NetBSD interfaces are made visible, even
if some other feature-test macro (like _POSIX_C_SOURCE) is defined.
<sys/featuretest.h> defined _NETBSD_SOURCE if none of _ANSI_SOURCE,
_POSIX_C_SOURCE and _XOPEN_SOURCE is defined, so as to preserve
existing behaviour.

This has two major advantages:
+ Programs that require non-POSIX facilities but define _POSIX_C_SOURCE
can trivially be overruled by putting -D_NETBSD_SOURCE in their CFLAGS.
+ It makes most of the #ifs simpler, in that they're all now ORs of the
various macros, rather than having checks for (!defined(_ANSI_SOURCE) ||
!defined(_POSIX_C_SOURCE) || !defined(_XOPEN_SOURCE)) all over the place.

I've tried not to change the semantics of the headers in any case where
_NETBSD_SOURCE wasn't defined, but there were some places where the
current semantics were clearly mad, and retaining them was harder than
correcting them. In particular, I've mostly normalised things so that
_ANSI_SOURCE gets you the smallest set of stuff, then _POSIX_C_SOURCE,
_XOPEN_SOURCE and _NETBSD_SOURCE in that order.

Tested by building for vax, encouraged by thorpej, and uncontested in
tech-userlevel for a week.

add wcstoll, wcstoimax, wcstoull and wcstoumax. (lib/20656)
- these are defined in C99 (wcsto[ui]max) and SUSv3.
- these implementations are written by sigsegv@s25.xrea.com,
derived from NetBSD's wcstol/wcstoul.
- I just added some comments.

add fgetws() and fputws() (lib/20576).

Note: fgetws.c, fgetws.3, fputws.c and fputws.3 are obtained from FreeBSD,
and fitted by sigsegv@infoseek.jp and me.

changes related to lib/20576 and lib/20577.
- add wcstok() and wcswcs(),
- add wcstok(3),
- move btowc() and wctob() into each ctype modules,
- bump ctype interface ABI version,
- bump i18n modules' minor and
- update sets.
and fix a stupid bug in _RUNE_ISCACHED macro.

- add wctob() function. (I forgot it at the last commit.)
- fix btowc(); I quite misunderstood about it.

add some ISO C 1995 I18N functions and types:
btowc, wctrans, towctrans, wcscoll, wcsxfrm, wctype_t and wctrans_t.

fix prototype of fputwc, putwc and putwchar.

- make FILE structure extensible without breaking binary-compatibility.
- add fputwc, fgetwc, fwide and related functions.
- add hooks needed to maintain the orientation of file stream.

add wcstod/wcstol/wcstoul.

branches: 1.9.2;
Sprinkle some __restrict into <wchar.h>.

wcwidth is outside of standard

add wcsl{cat,cpy}

first import of citrus LC_CTYPE locale. singlebyte only at this moment.
shot-term TODO:
- enable multibyte locales. this includes loadable locale modules
(#ifdef DLRUNE).
- populate LC_CTYPE definition files.
- other functions such as iconv()
- make libc functions more friendly with multibyte.
- multilingualize other LC_xx
- torture tests

XXX don't forget to "make depend" when you rebuild libc, multibyte.c is
moved from lib/libc/stdlib to lib/libc/locale.

add dummy wcwidth() and wcswidth(). wcwidth() will be updated later.

add wcs* functions. consier it as part of libc minor crank 68 -> 69.
add decl of WEOF into wchar.h. ISO/IEC 9899:1999(E)..

ISO 9899-1990: #include <wchar.h> should pull definition for "NULL" in.
checked with Norihiro Kumagai <kuma@oasis.sharplabs.com>

add wmem* functions, from citrus. bump libc shlib minor.

branches: 1.1.2;
* Move <wchar.h> from libcurses to include (for the missing functionality
is to be provided by libc).
* Define wint_t and size_t in <wchar.h> as well.

Fix visibility of various C99 features, esp. for C++11.

Limit wcslcat, wcslcpy visibility to _NETBSD_SOURCE
wcswidth, wcwidth to POSIX.1-2001 or _NETBSD_SOURCE

Updated patch from kretschm in PR standards/39422

branches: 1.42.8; 1.42.12; 1.42.14;
Import wcsnlen(3) to libc

The wcsnlen(3) function conforms to POSIX.1-2008 and is an addition to the
ISO C standard.

size_t wcsnlen(const wchar_t *s, size_t maxlen);

The wcsnlen(3) function computes the number of wide-characters in a wide-
-string to which s points, not including NULL terminating wide-character
code and checking no more than maxlen wide-characters. This function never
examines wide-characters beyond a wide-string of maxlen size.


This function is a safer version of wcslen(3):

size_t wcslen(const wchar_t *s);


Update STANDARDS section of wmemchr(3) describing wide-character functions.

branches: 1.41.2;
add open_{,w}memstream

Expose properly vfwscanf and friends for POSIX_SOURCE >= 200112L

Add nl_langinfo_l, catopen_l and wcsftime_l.

Add mbsnrtowcs and wcsnrtombs. Approved by core.

More __BEGIN_DECLS / __END_DECLS wrappers.

Add scanf_l and wscanf_l families.

Add explicit locale versions for the printf family. Replace asprintf,
snprintf and sprintf with simple wrappers around the corresponding
va_list functions to reduce code duplication.

Add wcscoll_l, wcsxfrm_l, wcsncasecmp_l, wcscasecmp_l, btowc_l,
mbrlen_l, mbsinit_l, mbsrtowcs_l, wcrtomb_l, wcsrtombs_l and wctob_l.

Add wcstof_l, wcstod_l and wcstold_l.

Add support for wcstoimax_l and friends.

Also add prototypes for wcwidth_l and wcswidth_l.

branches: 1.30.2; 1.30.4; 1.30.8;
Retire varargs.h support. Move machine/stdarg.h logic into MI
sys/stdarg.h and expect compiler to provide proper builtins, defaulting
to the GCC interface. lint still has a special fallback.
Reduce abuse of _BSD_VA_LIST_ by defining __va_list by default and
derive va_list as required by standards.

1. {wctype,wctrans,mbstate}_t: switch MD to MI like other
libc implementation (such as *BSD and glibc2).

2. don't typedef void * wc{type,trans}_t, suggested by soda@-san.
it may pass through compiler type check, it's harmful.
so i introduce dummy struct __tag_wc{type,trans}_t(iconv_t already does).

no ABI change was made.

branches: 1.28.2;
Don't define wchar_t for c++; it is native in the language. From Alexander
Nasonov

branches: 1.27.8; 1.27.10; 1.27.18;
Remove clause 3 and 4 from TNF licenses

branches: 1.26.16;
PR/34238: Aleksey Cheusov: add wcsdup, wcscasecmp and wcsncasecmp functions

branches: 1.25.2;
add c99 wcstof(3) and wcstold(3).
requested by skrll AT netbsd DOT org, thanks.

bump libc minor 138 -> 139.

add t_putws

Wide stdio functions.

PR/29826: J. T. Conklin: Add wcsftime(3) (from FreeBSD)

branches: 1.21.2;
de-__P -- the hack is long since useless. Discussed with christos,
matt, kleink, others. Approved by christos.

C99: Provide WCHAR_{MAX,MIN} via <machine/wchar_limits.h> (we'll also
provide WINT_{MAX,MIN} along with it).
Fixes PR standards/24040 from Masao Uebayashi.

prototype must not have variable name

Add a new feature-test macro, _NETBSD_SOURCE. If this is defined
by the application, all NetBSD interfaces are made visible, even
if some other feature-test macro (like _POSIX_C_SOURCE) is defined.
<sys/featuretest.h> defined _NETBSD_SOURCE if none of _ANSI_SOURCE,
_POSIX_C_SOURCE and _XOPEN_SOURCE is defined, so as to preserve
existing behaviour.

This has two major advantages:
+ Programs that require non-POSIX facilities but define _POSIX_C_SOURCE
can trivially be overruled by putting -D_NETBSD_SOURCE in their CFLAGS.
+ It makes most of the #ifs simpler, in that they're all now ORs of the
various macros, rather than having checks for (!defined(_ANSI_SOURCE) ||
!defined(_POSIX_C_SOURCE) || !defined(_XOPEN_SOURCE)) all over the place.

I've tried not to change the semantics of the headers in any case where
_NETBSD_SOURCE wasn't defined, but there were some places where the
current semantics were clearly mad, and retaining them was harder than
correcting them. In particular, I've mostly normalised things so that
_ANSI_SOURCE gets you the smallest set of stuff, then _POSIX_C_SOURCE,
_XOPEN_SOURCE and _NETBSD_SOURCE in that order.

Tested by building for vax, encouraged by thorpej, and uncontested in
tech-userlevel for a week.

add wcstoll, wcstoimax, wcstoull and wcstoumax. (lib/20656)
- these are defined in C99 (wcsto[ui]max) and SUSv3.
- these implementations are written by sigsegv@s25.xrea.com,
derived from NetBSD's wcstol/wcstoul.
- I just added some comments.

add fgetws() and fputws() (lib/20576).

Note: fgetws.c, fgetws.3, fputws.c and fputws.3 are obtained from FreeBSD,
and fitted by sigsegv@infoseek.jp and me.

changes related to lib/20576 and lib/20577.
- add wcstok() and wcswcs(),
- add wcstok(3),
- move btowc() and wctob() into each ctype modules,
- bump ctype interface ABI version,
- bump i18n modules' minor and
- update sets.
and fix a stupid bug in _RUNE_ISCACHED macro.

- add wctob() function. (I forgot it at the last commit.)
- fix btowc(); I quite misunderstood about it.

add some ISO C 1995 I18N functions and types:
btowc, wctrans, towctrans, wcscoll, wcsxfrm, wctype_t and wctrans_t.

fix prototype of fputwc, putwc and putwchar.

- make FILE structure extensible without breaking binary-compatibility.
- add fputwc, fgetwc, fwide and related functions.
- add hooks needed to maintain the orientation of file stream.

add wcstod/wcstol/wcstoul.

branches: 1.9.2;
Sprinkle some __restrict into <wchar.h>.

wcwidth is outside of standard

add wcsl{cat,cpy}

first import of citrus LC_CTYPE locale. singlebyte only at this moment.
shot-term TODO:
- enable multibyte locales. this includes loadable locale modules
(#ifdef DLRUNE).
- populate LC_CTYPE definition files.
- other functions such as iconv()
- make libc functions more friendly with multibyte.
- multilingualize other LC_xx
- torture tests

XXX don't forget to "make depend" when you rebuild libc, multibyte.c is
moved from lib/libc/stdlib to lib/libc/locale.

add dummy wcwidth() and wcswidth(). wcwidth() will be updated later.

add wcs* functions. consier it as part of libc minor crank 68 -> 69.
add decl of WEOF into wchar.h. ISO/IEC 9899:1999(E)..

ISO 9899-1990: #include <wchar.h> should pull definition for "NULL" in.
checked with Norihiro Kumagai <kuma@oasis.sharplabs.com>

add wmem* functions, from citrus. bump libc shlib minor.

branches: 1.1.2;
* Move <wchar.h> from libcurses to include (for the missing functionality
is to be provided by libc).
* Define wint_t and size_t in <wchar.h> as well.

Limit wcslcat, wcslcpy visibility to _NETBSD_SOURCE
wcswidth, wcwidth to POSIX.1-2001 or _NETBSD_SOURCE

Updated patch from kretschm in PR standards/39422

branches: 1.42.8; 1.42.12;
Import wcsnlen(3) to libc

The wcsnlen(3) function conforms to POSIX.1-2008 and is an addition to the
ISO C standard.

size_t wcsnlen(const wchar_t *s, size_t maxlen);

The wcsnlen(3) function computes the number of wide-characters in a wide-
-string to which s points, not including NULL terminating wide-character
code and checking no more than maxlen wide-characters. This function never
examines wide-characters beyond a wide-string of maxlen size.


This function is a safer version of wcslen(3):

size_t wcslen(const wchar_t *s);


Update STANDARDS section of wmemchr(3) describing wide-character functions.

branches: 1.41.2;
add open_{,w}memstream

Expose properly vfwscanf and friends for POSIX_SOURCE >= 200112L

Add nl_langinfo_l, catopen_l and wcsftime_l.

Add mbsnrtowcs and wcsnrtombs. Approved by core.

More __BEGIN_DECLS / __END_DECLS wrappers.

Add scanf_l and wscanf_l families.

Add explicit locale versions for the printf family. Replace asprintf,
snprintf and sprintf with simple wrappers around the corresponding
va_list functions to reduce code duplication.

Add wcscoll_l, wcsxfrm_l, wcsncasecmp_l, wcscasecmp_l, btowc_l,
mbrlen_l, mbsinit_l, mbsrtowcs_l, wcrtomb_l, wcsrtombs_l and wctob_l.

Add wcstof_l, wcstod_l and wcstold_l.

Add support for wcstoimax_l and friends.

Also add prototypes for wcwidth_l and wcswidth_l.

branches: 1.30.2; 1.30.4; 1.30.8;
Retire varargs.h support. Move machine/stdarg.h logic into MI
sys/stdarg.h and expect compiler to provide proper builtins, defaulting
to the GCC interface. lint still has a special fallback.
Reduce abuse of _BSD_VA_LIST_ by defining __va_list by default and
derive va_list as required by standards.

1. {wctype,wctrans,mbstate}_t: switch MD to MI like other
libc implementation (such as *BSD and glibc2).

2. don't typedef void * wc{type,trans}_t, suggested by soda@-san.
it may pass through compiler type check, it's harmful.
so i introduce dummy struct __tag_wc{type,trans}_t(iconv_t already does).

no ABI change was made.

branches: 1.28.2;
Don't define wchar_t for c++; it is native in the language. From Alexander
Nasonov

branches: 1.27.8; 1.27.10; 1.27.18;
Remove clause 3 and 4 from TNF licenses

branches: 1.26.16;
PR/34238: Aleksey Cheusov: add wcsdup, wcscasecmp and wcsncasecmp functions

branches: 1.25.2;
add c99 wcstof(3) and wcstold(3).
requested by skrll AT netbsd DOT org, thanks.

bump libc minor 138 -> 139.

add t_putws

Wide stdio functions.

PR/29826: J. T. Conklin: Add wcsftime(3) (from FreeBSD)

branches: 1.21.2;
de-__P -- the hack is long since useless. Discussed with christos,
matt, kleink, others. Approved by christos.

C99: Provide WCHAR_{MAX,MIN} via <machine/wchar_limits.h> (we'll also
provide WINT_{MAX,MIN} along with it).
Fixes PR standards/24040 from Masao Uebayashi.

prototype must not have variable name

Add a new feature-test macro, _NETBSD_SOURCE. If this is defined
by the application, all NetBSD interfaces are made visible, even
if some other feature-test macro (like _POSIX_C_SOURCE) is defined.
<sys/featuretest.h> defined _NETBSD_SOURCE if none of _ANSI_SOURCE,
_POSIX_C_SOURCE and _XOPEN_SOURCE is defined, so as to preserve
existing behaviour.

This has two major advantages:
+ Programs that require non-POSIX facilities but define _POSIX_C_SOURCE
can trivially be overruled by putting -D_NETBSD_SOURCE in their CFLAGS.
+ It makes most of the #ifs simpler, in that they're all now ORs of the
various macros, rather than having checks for (!defined(_ANSI_SOURCE) ||
!defined(_POSIX_C_SOURCE) || !defined(_XOPEN_SOURCE)) all over the place.

I've tried not to change the semantics of the headers in any case where
_NETBSD_SOURCE wasn't defined, but there were some places where the
current semantics were clearly mad, and retaining them was harder than
correcting them. In particular, I've mostly normalised things so that
_ANSI_SOURCE gets you the smallest set of stuff, then _POSIX_C_SOURCE,
_XOPEN_SOURCE and _NETBSD_SOURCE in that order.

Tested by building for vax, encouraged by thorpej, and uncontested in
tech-userlevel for a week.

add wcstoll, wcstoimax, wcstoull and wcstoumax. (lib/20656)
- these are defined in C99 (wcsto[ui]max) and SUSv3.
- these implementations are written by sigsegv@s25.xrea.com,
derived from NetBSD's wcstol/wcstoul.
- I just added some comments.

add fgetws() and fputws() (lib/20576).

Note: fgetws.c, fgetws.3, fputws.c and fputws.3 are obtained from FreeBSD,
and fitted by sigsegv@infoseek.jp and me.

changes related to lib/20576 and lib/20577.
- add wcstok() and wcswcs(),
- add wcstok(3),
- move btowc() and wctob() into each ctype modules,
- bump ctype interface ABI version,
- bump i18n modules' minor and
- update sets.
and fix a stupid bug in _RUNE_ISCACHED macro.

- add wctob() function. (I forgot it at the last commit.)
- fix btowc(); I quite misunderstood about it.

add some ISO C 1995 I18N functions and types:
btowc, wctrans, towctrans, wcscoll, wcsxfrm, wctype_t and wctrans_t.

fix prototype of fputwc, putwc and putwchar.

- make FILE structure extensible without breaking binary-compatibility.
- add fputwc, fgetwc, fwide and related functions.
- add hooks needed to maintain the orientation of file stream.

add wcstod/wcstol/wcstoul.

branches: 1.9.2;
Sprinkle some __restrict into <wchar.h>.

wcwidth is outside of standard

add wcsl{cat,cpy}

first import of citrus LC_CTYPE locale. singlebyte only at this moment.
shot-term TODO:
- enable multibyte locales. this includes loadable locale modules
(#ifdef DLRUNE).
- populate LC_CTYPE definition files.
- other functions such as iconv()
- make libc functions more friendly with multibyte.
- multilingualize other LC_xx
- torture tests

XXX don't forget to "make depend" when you rebuild libc, multibyte.c is
moved from lib/libc/stdlib to lib/libc/locale.

add dummy wcwidth() and wcswidth(). wcwidth() will be updated later.

add wcs* functions. consier it as part of libc minor crank 68 -> 69.
add decl of WEOF into wchar.h. ISO/IEC 9899:1999(E)..

ISO 9899-1990: #include <wchar.h> should pull definition for "NULL" in.
checked with Norihiro Kumagai <kuma@oasis.sharplabs.com>

add wmem* functions, from citrus. bump libc shlib minor.

branches: 1.1.2;
* Move <wchar.h> from libcurses to include (for the missing functionality
is to be provided by libc).
* Define wint_t and size_t in <wchar.h> as well.

Import wcsnlen(3) to libc

The wcsnlen(3) function conforms to POSIX.1-2008 and is an addition to the
ISO C standard.

size_t wcsnlen(const wchar_t *s, size_t maxlen);

The wcsnlen(3) function computes the number of wide-characters in a wide-
-string to which s points, not including NULL terminating wide-character
code and checking no more than maxlen wide-characters. This function never
examines wide-characters beyond a wide-string of maxlen size.


This function is a safer version of wcslen(3):

size_t wcslen(const wchar_t *s);


Update STANDARDS section of wmemchr(3) describing wide-character functions.

branches: 1.41.2;
add open_{,w}memstream

Expose properly vfwscanf and friends for POSIX_SOURCE >= 200112L

Add nl_langinfo_l, catopen_l and wcsftime_l.

Add mbsnrtowcs and wcsnrtombs. Approved by core.

More __BEGIN_DECLS / __END_DECLS wrappers.

Add scanf_l and wscanf_l families.

Add explicit locale versions for the printf family. Replace asprintf,
snprintf and sprintf with simple wrappers around the corresponding
va_list functions to reduce code duplication.

Add wcscoll_l, wcsxfrm_l, wcsncasecmp_l, wcscasecmp_l, btowc_l,
mbrlen_l, mbsinit_l, mbsrtowcs_l, wcrtomb_l, wcsrtombs_l and wctob_l.

Add wcstof_l, wcstod_l and wcstold_l.

Add support for wcstoimax_l and friends.

Also add prototypes for wcwidth_l and wcswidth_l.

branches: 1.30.2; 1.30.4; 1.30.8;
Retire varargs.h support. Move machine/stdarg.h logic into MI
sys/stdarg.h and expect compiler to provide proper builtins, defaulting
to the GCC interface. lint still has a special fallback.
Reduce abuse of _BSD_VA_LIST_ by defining __va_list by default and
derive va_list as required by standards.

1. {wctype,wctrans,mbstate}_t: switch MD to MI like other
libc implementation (such as *BSD and glibc2).

2. don't typedef void * wc{type,trans}_t, suggested by soda@-san.
it may pass through compiler type check, it's harmful.
so i introduce dummy struct __tag_wc{type,trans}_t(iconv_t already does).

no ABI change was made.

branches: 1.28.2;
Don't define wchar_t for c++; it is native in the language. From Alexander
Nasonov

branches: 1.27.8; 1.27.10; 1.27.18;
Remove clause 3 and 4 from TNF licenses

branches: 1.26.16;
PR/34238: Aleksey Cheusov: add wcsdup, wcscasecmp and wcsncasecmp functions

branches: 1.25.2;
add c99 wcstof(3) and wcstold(3).
requested by skrll AT netbsd DOT org, thanks.

bump libc minor 138 -> 139.

add t_putws

Wide stdio functions.

PR/29826: J. T. Conklin: Add wcsftime(3) (from FreeBSD)

branches: 1.21.2;
de-__P -- the hack is long since useless. Discussed with christos,
matt, kleink, others. Approved by christos.

C99: Provide WCHAR_{MAX,MIN} via <machine/wchar_limits.h> (we'll also
provide WINT_{MAX,MIN} along with it).
Fixes PR standards/24040 from Masao Uebayashi.

prototype must not have variable name

Add a new feature-test macro, _NETBSD_SOURCE. If this is defined
by the application, all NetBSD interfaces are made visible, even
if some other feature-test macro (like _POSIX_C_SOURCE) is defined.
<sys/featuretest.h> defined _NETBSD_SOURCE if none of _ANSI_SOURCE,
_POSIX_C_SOURCE and _XOPEN_SOURCE is defined, so as to preserve
existing behaviour.

This has two major advantages:
+ Programs that require non-POSIX facilities but define _POSIX_C_SOURCE
can trivially be overruled by putting -D_NETBSD_SOURCE in their CFLAGS.
+ It makes most of the #ifs simpler, in that they're all now ORs of the
various macros, rather than having checks for (!defined(_ANSI_SOURCE) ||
!defined(_POSIX_C_SOURCE) || !defined(_XOPEN_SOURCE)) all over the place.

I've tried not to change the semantics of the headers in any case where
_NETBSD_SOURCE wasn't defined, but there were some places where the
current semantics were clearly mad, and retaining them was harder than
correcting them. In particular, I've mostly normalised things so that
_ANSI_SOURCE gets you the smallest set of stuff, then _POSIX_C_SOURCE,
_XOPEN_SOURCE and _NETBSD_SOURCE in that order.

Tested by building for vax, encouraged by thorpej, and uncontested in
tech-userlevel for a week.

add wcstoll, wcstoimax, wcstoull and wcstoumax. (lib/20656)
- these are defined in C99 (wcsto[ui]max) and SUSv3.
- these implementations are written by sigsegv@s25.xrea.com,
derived from NetBSD's wcstol/wcstoul.
- I just added some comments.

add fgetws() and fputws() (lib/20576).

Note: fgetws.c, fgetws.3, fputws.c and fputws.3 are obtained from FreeBSD,
and fitted by sigsegv@infoseek.jp and me.

changes related to lib/20576 and lib/20577.
- add wcstok() and wcswcs(),
- add wcstok(3),
- move btowc() and wctob() into each ctype modules,
- bump ctype interface ABI version,
- bump i18n modules' minor and
- update sets.
and fix a stupid bug in _RUNE_ISCACHED macro.

- add wctob() function. (I forgot it at the last commit.)
- fix btowc(); I quite misunderstood about it.

add some ISO C 1995 I18N functions and types:
btowc, wctrans, towctrans, wcscoll, wcsxfrm, wctype_t and wctrans_t.

fix prototype of fputwc, putwc and putwchar.

- make FILE structure extensible without breaking binary-compatibility.
- add fputwc, fgetwc, fwide and related functions.
- add hooks needed to maintain the orientation of file stream.

add wcstod/wcstol/wcstoul.

branches: 1.9.2;
Sprinkle some __restrict into <wchar.h>.

wcwidth is outside of standard

add wcsl{cat,cpy}

first import of citrus LC_CTYPE locale. singlebyte only at this moment.
shot-term TODO:
- enable multibyte locales. this includes loadable locale modules
(#ifdef DLRUNE).
- populate LC_CTYPE definition files.
- other functions such as iconv()
- make libc functions more friendly with multibyte.
- multilingualize other LC_xx
- torture tests

XXX don't forget to "make depend" when you rebuild libc, multibyte.c is
moved from lib/libc/stdlib to lib/libc/locale.

add dummy wcwidth() and wcswidth(). wcwidth() will be updated later.

add wcs* functions. consier it as part of libc minor crank 68 -> 69.
add decl of WEOF into wchar.h. ISO/IEC 9899:1999(E)..

ISO 9899-1990: #include <wchar.h> should pull definition for "NULL" in.
checked with Norihiro Kumagai <kuma@oasis.sharplabs.com>

add wmem* functions, from citrus. bump libc shlib minor.

branches: 1.1.2;
* Move <wchar.h> from libcurses to include (for the missing functionality
is to be provided by libc).
* Define wint_t and size_t in <wchar.h> as well.