readlinkat: split into its own module * modules/symlinkat: Split readlinkat... * modules/readlinkat: ...into separate module. * m4/symlinkat.m4 (gl_FUNC_SYMLINKAT): Move readlinkat check... * m4/readlinkat.m4 (gl_FUNC_READLINAT): ...to new file. * lib/symlinkat.c (readlinkat): Move... * lib/readlinkat.c: ...into new file. * modules/symlinkat-tests: Split readlinkat test... * modules/readlinkat-tests: ...into separate module. * tests/test-symlinkat.c: Split... * tests/test-readlinkat.c: ...into new file. * NEWS: Document the split. * doc/posix-functions/readlinkat.texi (readlinkat): Likewise. * lib/unistd.in.h (readlinkat): Likewise. Suggested by Bruno Haible. Signed-off-by: Eric Blake <eblake@redhat.com>

@node catopen
@section @code{catopen}
@findex catopen

POSIX specification: @url{http://www.opengroup.org/onlinepubs/9699919799/functions/catopen.html}

Gnulib module: ---

Portability problems fixed by Gnulib:
@itemize
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@item
This function is missing on some platforms:
Cygwin, mingw, BeOS.
@end itemize