Blender Git Loki

Merge branch 'master' into soc-2014-viewport_fx

I have resolved some differences, for instance selection code which was more or less a stub, to be
the same as master. This will have to be fixed later.

Conflicts:
CMakeLists.txt
intern/ghost/CMakeLists.txt
intern/ghost/intern/GHOST_SystemWin32.cpp
intern/ghost/intern/GHOST_Window.cpp
intern/ghost/intern/GHOST_WindowWin32.cpp
intern/ghost/intern/GHOST_WindowX11.cpp
source/blender/blenlib/BLI_math_matrix.h
source/blender/blenlib/intern/math_matrix.c
source/blender/gpu/CMakeLists.txt
source/blender/gpu/GPU_select.h
source/blender/gpu/intern/gpu_buffers.c
source/blender/gpu/intern/gpu_draw.c
source/blender/gpu/intern/gpu_extensions.c
source/blender/gpu/intern/gpu_select.c
source/blender/gpu/shaders/gpu_shader_simple_vert.glsl
source/blender/nodes/CMakeLists.txt