Glib resource framework

[Alexander Larsson <alexl redhat com>]

I just finished a one-day hackathon to add a resource framework to glib, its
somewhat working if not very polished. Its in the "resources" branch in glib
git.

I think this could be very useful in many places, for instance to ship built-in 
css files, gtk builder files, win32 theme images etc in a way that still makes libraries 
relocatable (and avoids potential for runtime errors due to not found files).

Feedback on the concept and the code welcome... Time to zzzzleep...