Icon buttons now appear in grayscale when they are deactivated
Remove D3D related files
Remove software renderer
Merge remote-tracking branch 'upstream/master'
Issue #1505

Dynamically change font size in a DynamicRibbonWidget to make labels fit,
and also cut the text when it's just too long
Reenable GL 3.1 support on windows
Use glsl with GL >= 3.1
Use glVertexAttribDivisorARB

If GL 3.1 is supported but not 3.3, use glVertexAttribDivisorARB instead
of glVertexAttribDivisor
Remove another CBurning file
Remove 3DS Loader
Remove Half Life loader
Remove ogre loader
Remove X/MS3D file loader
Add default texture to m_sun_interposer
Merge MAT_* with shadertype
Set normal map and detail map in material.cpp
Fix material detection
Improve debug msg
Merge branch 'minlicht'
Fixed info message.