Copy stable/10@r272459 to releng/10.1 as part of
the 10.1-RELEASE process.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Repo copy libpthreads to libkse.
This introduces the WITHOUT_LIBKSE nob,
and changes WITHOUT_LIBPTHREADS to mean with neither threading libs.
Approved by: re(kensmith)

o Include <sys/time.h>
o Make this ILP32/LP64 clean: cast pointers to long
o Code conditional upon DEBUG must also be conditional
upon _LIBC_R_

o Include <string.h>
o Make this ILP32/LP64 clean: cast pointers to long.

Fix typo: s/_LIBC_R/_LIBC_R_/

libkse was renamed to libpthread.

This test relies on the concurrency level being 1; make it so.

Don't run verify directly as that would require the perl script to
have execute permissions. Run "perl verify" instead. Replace all
occurences of the hardcoding of ./verify with $(VERIFY) to allow
it to be overridden as well.

o Eliminate upcall for PTHREAD_SYSTEM_SCOPE thread, now it
is system bound thread and when it is blocked, no upcall is generated.

o Add ability to libkse to allow it run in pure 1:1 threading mode,
defining SYSTEM_SCOPE_ONLY in Makefile can turn on this option.

o Eliminate code for installing dummy signal handler for sigwait call.

o Add hash table to find thread.

Reviewed by: deischen

For now, build and install this as libkse instead of libpthread.
This will avoid any accidental use of an experimental library.

Suggested by: rwatson
Approved by: re (jhb)

Mechanically change all libc_r references to libpthread.

Fix a couple of minor nits that prevented this from compiling.

Pointed out by: julian

Usage style sweep: spell "usage" with a small 'u'.
Also change one case of blatant __progname abuse (several more remain)
This commit does not touch anything in src/{contrib,crypto,gnu}/.

Mark some functions as __printflike() and/or taking const char * arguments
instead of char *.

MFC after: 2 weeks

Implement pthread_attr_[gs]etguardsize(). Non-default-size stacks used to
be malloc()ed, but they are now allocated using mmap(), just as the
default-size stacks are. A separate cache of stacks is kept for
non-default-size stacks.

Collaboration with: deischen

Add a test for PR 24345.

Update the verify script.

Don't define _REENTRANT, since the Makefile does so.

Fix a typo.

-pthread -> -lc_r

Add test to detect propagation of cancellation points within libc_r.

Automated regression test harness for libc_r. Existing tests are integrated,
a new test for POSIX semaphores was added, and examples of harness usage are
included.

$Id$ -> $FreeBSD$

Add mutex test program.

Revise test code for sigwait and add test code for sigsuspend.

Submitted by: Daniel M. Eischen <eischen@vigrid.com>

Add support for building test programs.