Add support for the BGRA OpenGL extension to the B2G emulator
Merge pull request #4 from bjacob/b2g-4.3_r2.1

Add support for the BGRA OpenGL extension to the B2G emulator
Merge remote-tracking branch 'b2g/b2g-4.3_r2.1' into b2g-4.4.2_r1