Initial commit

A plugin for metacity-clutter (mutter) that initializes Javascript
and via Javascript adds an object to the mutter scene graph.

src/gnome-shell-plugin.c: metacity-clutter-plugin
src/shell-global.[ch]: Simple global-information object
js/: Directory for javascript
scripts/start-in-Xephyr: Launch metacity with our plugin
  "nested" within an Xephy X server

svn path=/trunk/; revision=2