always define G_GNUC_EXTENSION, even when not needed by GLib. That's

always define G_GNUC_EXTENSION, even when not needed by GLib. That's

2000-03-21  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>

	* glib.h, configure.in, gutils.h: always define G_GNUC_EXTENSION,
	even when not needed by GLib. That's actually also the way, the
	GLib reference manual describes that macro. Therefore I had to
	remove the lonesome #include <glibconfig.h> in gutils.c, which
	doesn't seem to be needed there however. This change should make
	Ben Gertzfield <che@debian.org> happy.

	* gutils.c: Furthermore two warnings in gutils.c were voided,
	which crept in due to my last change.