[Mesa-dev] Fix for punctuation preventing macro expansion

[Carl Worth]

Here's a real-quick patch series to fix the bug mentioned here:

	GLSL preprocessor doesn't replace defines ending with ":"
	https://bugs.freedesktop.org/show_bug.cgi?id=44764

I believe the patch is correct, but I haven't run any testing more
than the set of ~100 glcpp tests. [My piglit seems to be broken at the
moment, and it's the weekend, so I'm not motivated to fix that now.]

So, next Monday I plan to fix my piglit and report from what I get from
more thorough testing of this patch. In the meantime, if anybody else
wants to review and test this patch, that would be great.

-Carl