Implement xlocale APIs from Darwin, mainly for use by libc++. This adds a
load of _l suffixed versions of various standard library functions that use
the global locale, making them take an explicit

Implement xlocale APIs from Darwin, mainly for use by libc++. This adds a
load of _l suffixed versions of various standard library functions that use
the global locale, making them take an explicit locale parameter. Also
adds support for per-thread locales. This work was funded by the FreeBSD
Foundation.

Please test any code you have that uses the C standard locale functions!

Reviewed by: das (gdtoa changes)
Approved by: dim (mentor)

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Merge from head

- Merge from HEAD

Spacing fixes. No actual change.

Merge from HEAD

MFV of tzcode2009e:

Upgrade of the tzcode from 2004a to 2009e.

Changes are numerous, but include...

- New format of the output of zic, which supports both 32 and 64
bit time_t formats.

- zdump

MFV of tzcode2009e:

Upgrade of the tzcode from 2004a to 2009e.

Changes are numerous, but include...

- New format of the output of zic, which supports both 32 and 64
bit time_t formats.

- zdump on 64 bit platforms will actually produce some output instead
of doing nothing for a looooooooong time.

- linux_base-fX, with X >= at least 8, will work without problems related
to the local time again.

The original patch, based on the 2008e, has been running for a long
time on both my laptop and desktop machine and have been tested by
other people.

After the installation of this code and the running of zic(8), you
need to run tzsetup(8) again to install the new datafile.

Approved by: wollman@ for usr.sbin/zic
MFC after: 1 month

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integrate from head@185615

Pass a pointer to warn2 so the warn2 == IN_ALL would not be an
always-false condition.

Add glibc-style strftime(3) padding specifiers, namely, -(no padding),
_(use space as padding), and 0(zero padding).

These GNU extensions are widely used ones that is worthy for us to
have.

Discuss

Add glibc-style strftime(3) padding specifiers, namely, -(no padding),
_(use space as padding), and 0(zero padding).

These GNU extensions are widely used ones that is worthy for us to
have.

Discussed with: stefanf, roam, -current
Approved by: murray
Prodded by: ports/72722, ports/72723
MFC After: 1 month

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Merge changes from the tzcode2004a import. Wherever possible I tried to bring
us closer to the vendor branch.

Requested by: wollman

Import tzcode2004a.

Obtained from: ftp://elsie.nci.nih.gov/pub/tzcode2004a.tar.gz

Remove a stale reference to %Ef and %EF from a comment.

Style: One space between "restrict" qualifier and "*".

- Add the 'restrict' qualifier to the function definition of
strftime(3) for IEEE Std 1003.1-2001 compliance and remove
excessive usage of the 'const' qualifier that was neither
present in t

- Add the 'restrict' qualifier to the function definition of
strftime(3) for IEEE Std 1003.1-2001 compliance and remove
excessive usage of the 'const' qualifier that was neither
present in the prototype in the publice header, nor in the
local prototype just above the function definition.
- Replace the K&R function definition with a ANSI-C one.
- Update the prototype of strftime(3) in its manual page.

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Remove use of __P() (actually P()) from code now that it's no longer
available.

Fix the style of the SCM ID's.
I believe have made all of libc .c's as consistent as possible.

Get rid of non-standard %E[Ff] formats, userland apps already fixed

Relax local FreeBSD restrictions on 3 chars abbrev. name length and %c format
since they not allows POSIXly legal locale data. Currently, if relaxed form
POSIXly legal locale data will be used right

Relax local FreeBSD restrictions on 3 chars abbrev. name length and %c format
since they not allows POSIXly legal locale data. Currently, if relaxed form
POSIXly legal locale data will be used right now, some programs will be broken,
but it means that either locale data or programs must be fixed, not the library.

Introduce non-standard md_order (month/day order) locale field to be used later
via nl_langinfo(). Currently %EF and %Ef emulated using this field, but they
planned for remove in future in favour of nl_langinfo() test field.

Implement %F per POSIX

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Implement ampm_fmt (%r) per POSIX

Back out snprintf -> sprintf change until I have time to look at it.

Hardcode c_fmt in a different way since used in nl_langinfo now

Catch up to latest chanage in timelocal structures exporting.

Remove _THREAD_SAFE and make libc thread-safe by default by
adding (weak definitions to) stubs for some of the pthread
functions. If the threads library is linked in, the real
pthread functions will

Remove _THREAD_SAFE and make libc thread-safe by default by
adding (weak definitions to) stubs for some of the pthread
functions. If the threads library is linked in, the real
pthread functions will pulled in.

Use the following convention for system calls wrapped by the
threads library:
__sys_foo - actual system call
_foo - weak definition to __sys_foo
foo - weak definition to __sys_foo

Change all libc uses of system calls wrapped by the threads
library from foo to _foo. In order to define the prototypes
for _foo(), we introduce namespace.h and un-namespace.h
(suggested by bde). All files that need to reference these
system calls, should include namespace.h before any standard
includes, then include un-namespace.h after the standard
includes and before any local includes. <db.h> is an exception
and shouldn't be included in between namespace.h and
un-namespace.h namespace.h will define foo to _foo, and
un-namespace.h will undefine foo.

Try to eliminate some of the recursive calls to MT-safe
functions in libc/stdio in preparation for adding a mutex
to FILE. We have recursive mutexes, but would like to avoid
using them if possible.

Remove uneeded includes of <errno.h> from a few files.

Add $FreeBSD$ to a few files in order to pass commitprep.

Approved by: -arch

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sprintf -> snprintf

Force %c to be "%a %Ef %T %Y" to eliminate problems with bad c_fmt

Submitted by: ru