scan_env before proxying glXCreateContext
scan_env before proxying glXCreateContext

RobertoMalatesta/glshim,seandepagnier/glshim,RobertoMalatesta/glshim,seandepagnier/glshim,lunixbochs/glshim,lunixbochs/glshim,RobertoMalatesta/glshim,RobertoMalatesta/glshim,lunixbochs/glshim,lunixbochs/glshim,seandepagnier/glshim,seandepagnier/glshim