2005-05-16  Morten Welinder  <terra@gnome.org>

	* configure.in (set_more_warnings): Kill -Wcast-align.  It does
	not catch anything useful.  We run-time chec, either in gobject
	macros or else by virtue of running on a Sparc.  Also we do *tons*
	of valid cast from base classes to derived classes after carefully
	checking the dynamic type.