This patch provides two useful changes to the ut_renderer unit-test program: 1/ the ability to control the GL window dimensions with two env. variables: ANDROID_WINDOW_WIDTH and ANDROID_WINDOW_HEIGHT 2/ the ability to save/restore the GL window position between GL connections. Both are useful to use ut_renderer in a demo setting, nothing more. Change-Id: I19a8f911ee821ddc4eb6307de12d63600ff696b0