integrate gui
no message
mouse event and redraw event
camera trnas
Merge branch 'up'

Conflicts:
	rainbow-master-vbo-vao-0908/examples/gl/pickingExample-genericVertex/out.ppm
	rainbow-master-vbo-vao-0908/examples/gl/pickingExample-genericVertex/src/materialshader.cpp
	rainbow-master-vbo-vao-0908/examples/gl/pickingExample-genericVertex/src/ofApp.cpp
	rainbow-master-vbo-vao-0908/pbrt-v2-src/pbrt-v2/tmp/libpbrt/libpbrt.lastbuildstate