GRAPHICS: Replace deprecated fixed function vertex attributes with generic attributes setup. Use gl2 core shader calls. Upload object color as uniform.
GRAPHICS: Remove deprecated LUMINANCE texture format.
TRACK: Move racing line graphics out of roadpatch/strip.
Merge branch 'master' into vertex
STYLE: Prefer istringstream/ostringstream over stringstream.
GRAPHICS: Rename VertexTexCoord0/1/2 attributes to VertexTexCoord/BlendIndices/BlendWeights.
GRAPHICS: Remove SetColor from VertexArray.
GRAPHICS: Remove TexCoordSets from VertexArray (never really used/supported).
GRAPHICS: Rename VertexAttribs to VertexAttrib.
GRAPHICS: Add vertex attribute format.
GRAPHICS: Typedef SceneNode List and Handle.
GRAPHICS: DrawableContainer cleanup. Move PtrVector to Graphics. Remove unused ForEachWithName. Add const ForEach.
GRAPHICS: DrawableContainer cleanup. Move PtrVector to Graphics part 2.
GRAPHICS: Move drawables list def into DrawableContainer.
BUILD: Add vertex branch to travis.
GRAPHICS: Typedef dynamic drawables container type.
GRAPHICS: Cleanup model vertex array object creation.
GRAPHICS: Clear model vbos vector after deleting buffers.
GRAPHICS: Remove redundant generatedvao flag from model.
GRAPHICS: Enforce uniform variable name format (underscore_case).