port to latest libgdx
Split into two projects

 - The old "Roguelike" project
 - a new "RTRL-desktop" project
Updated libgdx
Replace System.nanoTime with TimeUtils.nanoTime
avoid use of BufferedReader
use GLCommon instead of GL10
add android ad HTML projects
move images to android assets folder (which apparently makes them work in all the other projects)

Conflicts:
	RTRL-android/assets/images/DF_alt_tiles.png
add project files
add less ugly loading bar
Change settings enough to get android working