massive cleanup - removed gst
Current changes:
- removed some gnome parts (nearly everything is now upstream)
- removed gstreamer and its plugins, ecxept gst-plugins-libnice
DON'T FORGET TO RUN THE FOLLOWING AFTER UPDATING (if you're using eix):
eix-update && eix -c --installed-from-overlay zGnome | grep ? | awk '{print $2}' | xargs emerge -1