Add GL common file
src/Makefile.am
src/drivers/video_gl.c
src/drivers/video_gl.h
src/drivers/video_x11.c
src/Makefile.am
src/drivers/video_gl.c
src/drivers/video_gl.h
src/drivers/video_x11.c
Fix hsync timing checks
Add timer_init and timer_run to preset the timer ahead of time
test/testdisp.c
test/timer.c
Add timer_init and timer_run to preset the timer ahead of time
test/testdisp.c
test/timer.c
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