libs/posix: Implemented new locale functions

Implemented the missing POSIX functions in <locale.h>:
newlocale, duplocale, uselocale, and freelocale, and also
provided missing type definitions for <locale.h>.

Implemented missing POSIX locale-based function variants.

Modified LocaleBackend so that it could support thread-local
locales.

Some glibc-like locale-related variables supporting
ctype and printf family of functions have also been updated
to reflect the thread-local variables present in the latest
glibc sources.

As there have been some modifications to global symbols
in libroot, libroot_stubs.c has been regenerated.

Bug: #17168
Change-Id: Ibf296c58c47d42d1d1dfb2ce64042442f2679431
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5351
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>

libroot: Replace glibc search implementation with musl's.

glibc's hsearch and tree functions are old and rather slow.
While these APIs do not appear to be used very often, these
changes can make a big difference: in one benchmark I was sent,
this change is nearly a 10x speedup or more in some cases.

More work towards hybrid support

* All packaging architecture dependent variables do now have a
respective suffix and are set up for each configured packaging
architecture, save for the kernel and boot loader variables, which
are still only set up for the primary architecture.
For convenience TARGET_PACKAGING_ARCH, TARGET_ARCH, TARGET_LIBSUPC++,
and TARGET_LIBSTDC++ are set to the respective values for the primary
packaging architecture by default.
* Introduce a set of MultiArch* rules to help with building targets for
multiple packaging architectures. Generally the respective targets are
(additionally) gristed with the packaging architecture. For libraries
the additional grist is usually omitted for the primary architecture
(e.g. libroot.so and <x86>libroot.so for x86_gcc2/x86 hybrid), so that
Jamfiles for targets built only for the primary architecture don't
need to be changed.
* Add multi-arch build support for all targets needed for the stage 1
cross devel package as well as for libbe (untested).

added hcreate, hdestroy, hsearch from glibc

Introduce __set_errno() throughout libroot.

* add errno_private.h, which defines the __set_errno() macro with
and without tracing
* instead of setting errno manually, all libroot's code now invokes
__set_errno(), which makes it much easier to trace changes to errno
* redirect glibc's use of __set_errno() to our own version

* Adding libgen.h as a public header
* Implementing dirname and basename

I removed dirname from glibc/misc and reimplemented in order
to (hopefully) keep thing tidy.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28888 a95241bf-73f2-0310-859d-f6bbb57e9c96

added lsearch and lfind
remove unknown infnanf and strtcopy functions


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27423 a95241bf-73f2-0310-859d-f6bbb57e9c96

added insque and remque


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27422 a95241bf-73f2-0310-859d-f6bbb57e9c96

added memrchr and dirname


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24985 a95241bf-73f2-0310-859d-f6bbb57e9c96

Copied [efg]cvt() and *cvt_r() from glibc 2.3.2, this gets cdrecord running.
Btw, why do we have _G_config.h in 2 places ?


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24192 a95241bf-73f2-0310-859d-f6bbb57e9c96

added some tsearch and iconv functions,


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22533 a95241bf-73f2-0310-859d-f6bbb57e9c96

More work towards hybrid support

* All packaging architecture dependent variables do now have a
respective suffix and are set up for each configured packaging
architecture, save for the kernel and boot loader variables, which
are still only set up for the primary architecture.
For convenience TARGET_PACKAGING_ARCH, TARGET_ARCH, TARGET_LIBSUPC++,
and TARGET_LIBSTDC++ are set to the respective values for the primary
packaging architecture by default.
* Introduce a set of MultiArch* rules to help with building targets for
multiple packaging architectures. Generally the respective targets are
(additionally) gristed with the packaging architecture. For libraries
the additional grist is usually omitted for the primary architecture
(e.g. libroot.so and <x86>libroot.so for x86_gcc2/x86 hybrid), so that
Jamfiles for targets built only for the primary architecture don't
need to be changed.
* Add multi-arch build support for all targets needed for the stage 1
cross devel package as well as for libbe (untested).

added hcreate, hdestroy, hsearch from glibc

Introduce __set_errno() throughout libroot.

* add errno_private.h, which defines the __set_errno() macro with
and without tracing
* instead of setting errno manually, all libroot's code now invokes
__set_errno(), which makes it much easier to trace changes to errno
* redirect glibc's use of __set_errno() to our own version

* Adding libgen.h as a public header
* Implementing dirname and basename

I removed dirname from glibc/misc and reimplemented in order
to (hopefully) keep thing tidy.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28888 a95241bf-73f2-0310-859d-f6bbb57e9c96

added lsearch and lfind
remove unknown infnanf and strtcopy functions


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27423 a95241bf-73f2-0310-859d-f6bbb57e9c96

added insque and remque


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27422 a95241bf-73f2-0310-859d-f6bbb57e9c96

added memrchr and dirname


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24985 a95241bf-73f2-0310-859d-f6bbb57e9c96

Copied [efg]cvt() and *cvt_r() from glibc 2.3.2, this gets cdrecord running.
Btw, why do we have _G_config.h in 2 places ?


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24192 a95241bf-73f2-0310-859d-f6bbb57e9c96

added some tsearch and iconv functions,


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22533 a95241bf-73f2-0310-859d-f6bbb57e9c96