4.2 BSD takes a signal mask as argument while POSIX sigpause(int
sig) expects a single signal.  Do not expose our traditional BSD
sigpause(3) to XPG/POSIX sources.
OK guenther@

warnings with newer gcc versions and -Werror=unused-value.
OK guenther@

thrkill(2), rolling the kill(2) syscall number with the ABI change to
avoid breaking binaries during during the transition.  thrkill(2) includes
a 'tcb' argument that eliminates the need for locking in pthread_kill()
and simplifies pthread_cancel().  Switch __stack_smash_handler() to use
thrkill(2) and explicitly unblock SIGABRT.
Minor bump to both libc and libpthread: make sure you install a new kernel!
ok semarie@

(namespace pollution!) or talking about its opinion on code.
ok krw@

ok guenther millert kettenis

from the most recent version, use the implementation namespace for variables
in inline functions, and add __restrict as specified.
ok millert@

Okay otto@

instead of <pthread.h>.
ok guenther@, millert@

Correct the namespace protections for sigreturn(), sigwait(), and psignal()
ok millert@

of a 1 when creating signal masks.
ok millert@

<ctype.h> and <signal.h>
ok kettenis@ millert@ deraadt@

Needed to tell pedantic C++ compilers these symbols have 'C' linkage.
ok kurt@

combined GCC and ISO committees managed to make out of it.
With this, gcc >= 4.3 can grok its way through it correctly.
okay kettenis@, with some help figuring stuff out.

in sys/cdefs.h) instead of _FOO_SOURCE.  Also fix several namespace
pollution issues, including the byte order defines.  OK deraadt@

rescinded 22 July 1999.  Proofed by myself and Theo.

All POSIX libc api now there (to P1003.1c/D10)
(more md stuff is needed for other libc/arch/*)
(setlogin is no longer a special syscall)
Add -pthread option to gcc (that makes it use -lc_r and -D_POSIX_THREADS).
Doc some re-entrant routines
Add libc_r to intro(3)
dig() uses some libc srcs and an extra -I was needed there.
Add more md stuff to libc_r.
Update includes for the pthreads api
Update libc_r TODO