Changed the test for getpwuid_r to exclude those systems (i.e. IRIX), that

Changed the test for getpwuid_r to exclude those systems (i.e. IRIX), that

1999-02-08  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>

	* configure.in, acconfig.h: Changed the test for getpwuid_r to
	exclude those systems (i.e. IRIX), that set ENOSYS after the call.
	Test, if pthread_getspecific is posix like or something different,
	as on PCThreads.

	* gthread/gthread-posix.c (g_private_get_posix_impl): Use the
	HAVE_PTHREAD_GETSPECIFIC_POSIX macro to determine, which signature
	to use for pthread_getspecific.