Merge branch 'blender-tiles' of gitorious.org:blender-tiles/blender-tiles into blender-tiles

Conflicts:
source/blender/blenlib/BLI_compiler_compat.h
source/blender/compositor/CMakeLists.txt
source/blender/compositor/intern/COM_ChannelInfo.h
source/blender/compositor/intern/COM_ExecutionSystem.cpp
source/blender/compositor/intern/COM_MemoryBuffer.cpp
source/blender/compositor/intern/COM_OpenCLDevice.cpp
source/blender/compositor/nodes/COM_SocketProxyNode.cpp
source/blender/compositor/operations/COM_CompositorOperation.cpp
source/blender/compositor/operations/COM_ReadBufferOperation.h
source/blender/compositor/operations/COM_RenderLayersProg.cpp

Initialize colors, vectors and values in RenderLayersProg

Tiles: synced with master

Initialize colors, vectors and values in RenderLayersProg

Compositor squashed patch reapplied

Started with the MemoryBufferValue
still a lot needs to be done
stopped at testing the dilate/erode

TILES: did some fixed for value buffer

Determine image format of OpenCL device

TILES: TextureNode fix

TILES: moved buffer sizes to constants for easy access.

TILES: fixed some nodes.
still working on the defocus node

TILES: fixed glare, keying, defocus, normalize, vector curves