Multisampling suggestion

hi there

i’ve made this small mod to ofAppGlutWindow - and it works perfectly on my mac pro with ati radeon hd 2600’s

	glutInitDisplayString("rgb double depth>=16 alpha samples<=4");  
	//no use for this:  
	//glutInitDisplayMode( ... );  

4x multisampling using glut, looks better than just adding the GLUT_MULTISAMPLE

maybe this should be an option when setting up from main?