api optimized
Merge branch 'master' of https://github.com/libgdx/libgdx

Conflicts:
	tests/gdx-tests-android/assets/data/g3d/ship.png
	tests/gdx-tests/src/com/badlogic/gdx/tests/g3d/BaseG3dHudTest.java
Fog added to Default-Shader
+ Fog
+ libGDX: cleaning my resources
IntellJ Idea Project files ignored
Merge branch 'master' of https://github.com/libgdx/libgdx
Signed-off-by: blackbluegl <info@blackbluegl.de>
Add ship.obj and shadertest
Merge branch 'master' of https://github.com/libgdx/libgdx.git
 + 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
* Fog can be null. null = no fog
* Fog distance is calculated in DefaultShader class
* DefaultShader check fog setup for a Renderable in canRender
* Test fixed
Merge branch 'master' of https://github.com/libgdx/libgdx

Conflicts resolved:
	tests/gdx-tests/src/com/badlogic/gdx/tests/utils/GdxTests.java
gdx test fixed
Merge branch 'master' of https://github.com/libgdx/libgdx.git
* Shader updated: work with dot(x,x)
* DefaultShader updated: calculate fog distance ^2
revert ColorAttribute und FloatAttribute
clean
Merge branch 'master' of https://github.com/libgdx/libgdx into bullet2
Model and ModelInstance sync common methods