2000-05-01  Michael Natterer  <mitch@gimp.org>

	* app/main.c
	* libgimp/gimp.c: again... _do_ use gimp_signal_private() but
	force it to behave like signal(). While on Linux it seems to
	be ok to use both signal() and sigaction() (because signal() is
	built on top of sigaction()), doing the same on other systems
	is totally broken code. Thanks to Garry for pointing out this
	portability issue.

	* app/errors.c: s/vprintf/g_strdup_vprintf/

	* libgimp/gimpsignal.[ch]: code formating paranoia.