Revert "[droid] clear the depth buffer after rendering an addon."

This reverts commit b2728dd69223e11dc106d8b20ff9fd2c0abbc525.
Revert "[rbp] added raspberrypi EGL support plus a pseudo 3D mode for 3D output"

This reverts commit b0f57b850b5b51710f84e94e94a5125d82017580.

Conflicts:
	tools/android/depends/xbmc/Makefile
	xbmc/cores/VideoRenderers/BaseRenderer.cpp
	xbmc/guilib/GraphicContext.cpp
	xbmc/guilib/Resolution.h
	xbmc/windowing/egl/Makefile
	xbmc/windowing/egl/WinEGLPlatform.h
	xbmc/windowing/egl/WinEGLPlatformAndroid.cpp
	xbmc/windowing/egl/WinEGLPlatformGeneric.cpp
	xbmc/windowing/egl/WinEGLPlatformGeneric.h
	xbmc/windowing/egl/WinSystemGLES.cpp
	xbmc/windowing/egl/WinSystemGLES.h