add gl_helper for gl_get() param count
add gl_helper for gl_get() param count

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