Several EmuGL files were missing copyright notices; added them. Others
had them but below other code, which makes checking for them more
difficult -- I moved these to the top of the file.
These files were all created by GraphTech as a work for hire for AOSP.
Change-Id: Iee67bcf1c9b54ad5aa8a9288ded0382a974c32cb
This commit add CHECK_GL_ERROR define to decoders/renderer which enables various
glGetError() calls. Also changed emugen to add glGetError() after every dispatch call (based on
defintion of CHECK_GL_ERROR). Also cleaned some annoying printf's.