remove RGB texture conversion from tinygles merge
add glBitmap color support
move fps overlay to its own cli flag
improve block begin/end behavior
implement multitexturing (thanks @ptitseb)
add glMultiTexCoord1f, 3f(v) wrappers
improve gl current tracking
remove GL_FLOAT from accepted texture types
fix tex coords in CURRENT_BIT
improve some stack behavior with multitex
check before calling upstream glEnable/Disable
check before calling glClientActiveTexture
texture state only has two coords
fix CURRENT pointer
fix some issues with pointer copies
fix bug where dl_append_block uses the wrong block
improve defines in gl.h for test mocking
add test framework
improve test output on build error
remove mock.c from build