Use pthread_attr_init() as a test function, since most of the rest of

Use pthread_attr_init() as a test function, since most of the rest of

Tue May 19 23:41:04 1998  Owen Taylor  <otaylor@gtk.org>

	* configure.in: Use pthread_attr_init() as a test function,
	since most of the rest of -lpthread is macros on DU4.

Mon May 18 22:14:39 1998  Owen Taylor  <otaylor@gtk.org>
(Yasuhiro SHIRASAKI <joke@awa.tohoku.ac.jp> : gtk-joke-980517-0.patch)

	* gutils.c: Restored a missing prototype for g_vsprintf.