Merging phase 1 of the BGE Harmony branch:

* Shadow color now usable in the BGE
 * Simplified the shadow panel while "Blender Game" renderer is active
 * Added variance shadow maps for the BGE
 * Buffered shadows on sun lamps in the BGE (orthographic)
 * Light textures in the BGE

source/blender/gpu/SConscript

@@ -2,6 +2,7 @@
 Import ('env')
 
 sources = env.Glob('intern/*.c')
+sources += env.Glob('shaders/*.c')
 
 defs = [ 'GLEW_STATIC' ]