Since we only do US-ASCII and UTF-8, several parts of the locale
data are unused and unnecessary, so delete them: rl_tabs, rl_magic,
rl_encoding, and rl_invalid_rune.

ok schwarze@

New POSIX xlocale implementation written from scratch.
Complete in the sense that all POSIX *locale(3) and *_l(3) functions
are included, but in OpenBSD, we of course only really care about
LC_CTYPE and we only support ASCII and UTF-8.

With important help from kettenis@, guenther@, and jca@.
Repeated testing in ports bulk builds by naddy@.
Additional testing by jca@, sebastia@, dcoppa@, and others.
OK kettenis@ dcoppa@, and guenther@ on an earlier version.
Riding guenther@'s libc/librthread major bump.

We only support ASCII and UTF-8, so we never need to
change _ctype_, _tolower_tab_, and _toupper_tab_.
No functional change.
Suggested by and OK kettenis@

Delete some abstraction that we don't and won't need.
Declare functions rather than generating declarations with macros.
Just call functions rather than mainting function pointer tables.
Purge unused arguments. Simplify mbstate_t casting.
Garbage collect one empty and one unused function.

As a bonus, make mbsinit(3) work at all, it returned garbage
in the past due to a missing cast when passing mbstate_t.
Apart from that, no functional change.

No libc bump needed; only private functions are removed and
change prototype and only private structs change size.

OK stsp@ mpi@; deraadt@ likes the general direction.

Wrap <ctype.h> and <wctype.h> so that calls go direct and the symbols not
in standard C are all weak.
Hide several symbols internal to the implementation

ANSI prototype

fix a few warnings, keep the crypt stuff for later.
okay otto@

commit LC_CTYPE files from NetBSD/citrus, not yet linked in.
okay deraadt@

New POSIX xlocale implementation written from scratch.
Complete in the sense that all POSIX *locale(3) and *_l(3) functions
are included, but in OpenBSD, we of course only really care about
LC_CTYPE and we only support ASCII and UTF-8.

With important help from kettenis@, guenther@, and jca@.
Repeated testing in ports bulk builds by naddy@.
Additional testing by jca@, sebastia@, dcoppa@, and others.
OK kettenis@ dcoppa@, and guenther@ on an earlier version.
Riding guenther@'s libc/librthread major bump.

We only support ASCII and UTF-8, so we never need to
change _ctype_, _tolower_tab_, and _toupper_tab_.
No functional change.
Suggested by and OK kettenis@

Delete some abstraction that we don't and won't need.
Declare functions rather than generating declarations with macros.
Just call functions rather than mainting function pointer tables.
Purge unused arguments. Simplify mbstate_t casting.
Garbage collect one empty and one unused function.

As a bonus, make mbsinit(3) work at all, it returned garbage
in the past due to a missing cast when passing mbstate_t.
Apart from that, no functional change.

No libc bump needed; only private functions are removed and
change prototype and only private structs change size.

OK stsp@ mpi@; deraadt@ likes the general direction.

Wrap <ctype.h> and <wctype.h> so that calls go direct and the symbols not
in standard C are all weak.
Hide several symbols internal to the implementation

ANSI prototype

fix a few warnings, keep the crypt stuff for later.
okay otto@

commit LC_CTYPE files from NetBSD/citrus, not yet linked in.
okay deraadt@