Log Message:
Update to 0.2.9.

* Cleanup opengl and render routine
* Switch to using a camera based view
* Add ablility to specify a background image
* Add transparency effect
* Add screen size options to conf
* Add ability to set custom keybindings and mousebindings
* Make autoacquire off by default
* Mirror current desktop to all desktops option [Mathias Weyland]
* Add man pages
* Fix imlib2-config detection in configure