[PATCH] pixman: Fix MMX & SSE intrinsics to work with Sun compilers & Solaris

[Alan Coopersmith]

This updates the #if checks for all compilers, but I'm only set up to
test with gcc & Sun cc - I've tried not to break the existing Microsoft
Visual C & Intel compiler support, but haven't tested that.

	-Alan Coopersmith-           alan.coopersmith at sun.com
	 Sun Microsystems, Inc. - X Window System Engineering