change GLhandleARB to (void*) in OS X 10.7+ with appropriate typecasts
Merge branch 'master' of https://github.com/BruceSherwood/vpython-wx
be more consistent about casting rvalues
Update glext.h
Merge pull request #48 from AprilArcus/master

change GLhandleARB to (void*) in OS X 10.7+ with appropriate typecasts