Since we only have one API reference, we can drop the clutter/ sub-level, and have all the files under doc/reference.
svn merge \ https://svn.o-hand.com/repos/clutter/trunk/clutter@2509 \ https://svn.o-hand.com/repos/clutter/branches/clutter-ivan@HEAD
* actor-box.png: * Makefile.am: Add actor-box.png.