Fix non-Intel/-Alpha version of the G_BREAKPOINT macro to include

Fix non-Intel/-Alpha version of the G_BREAKPOINT macro to include

2001-10-29  Daniel Egger  <degger@fhm.edu>

	* glib/gbacktrace.h: Fix non-Intel/-Alpha version of the
	G_BREAKPOINT macro to include <signal.h> and use SIGTRAP.

	* glib/gmessages.c: Conditionalise definition of args2
	depending on the definition of HAVE_VSNPRINTF to avoid
	compiler warning.

	* gobject/testgruntime.c
	* tests/patterntest.c: Include <string.h> to avoid warnings.