Merge commit 'goog/master' into merge_master

Conflicts:
	libs/surfaceflinger/Layer.cpp
	libs/surfaceflinger/SurfaceFlinger.cpp
	opengl/libagl/egl.cpp
	opengl/libs/EGL/egl.cpp
	opengl/libs/GLES_CM/gl.cpp
	opengl/libs/GLES_CM/gl_api.in
	opengl/libs/gl_entries.in
	opengl/libs/tools/glapigen