added robovm backend, initial commit
minor ios fixups
fixed more stuff, working
 + fog moved to Lights class ( fog is active if fog's alpha is bigger than 0 )
 + fog distance changed in shader code (fade to fog before the camera clip geometry)
 + fog test case added
added vector pinball and super jumper robovm projects. not working
fixed robovm backend graphics initialization, create was called at an unfortunate time :p, super jumper et al are working
added gdx-invaders robovm project
fixed fetch script to pull in ios robovm natives into proper location
fixed ios check in iosgl20.cpp
Add transform to calculateBounds, fix transform
Merge pull request #443 from xoppa/3dapi2

Add transform to calculateBounds, fix transform
Javadocs.
added initial draft of composite shader and transform subshader
Merge branch 'master' of https://github.com/libgdx/libgdx
more changes to composite shader
more fixes
Faster load ubjson
Merge pull request #444 from xoppa/3dapi2

Faster load ubjson
Merge remote-tracking branch 'origin/master'