Changed the removeCamera() method so that it now actively calls releaseGLObjects()  on all children of a camera that aren't shared with other cameras on that context.
Changed the removeCamera() method so that it now actively calls releaseGLObjects() 
on all children of a camera that aren't shared with other cameras on that context.

This change fixes problems with allocating and deleting views.


ntoand/osg,artoolkit/osg,stmh/osg,XiaoCC/osg,omega-hub/osg,omega-hub/osg,stmh/osg,stmh/osg,koshman86/osg,ntoand/osg,artoolkit/osg,artoolkit/osg,ghub/osg,ntoand/osg,XiaoCC/osg,artoolkit/osg,ghub/osg,XiaoCC/osg,XiaoCC/osg,ghub/osg,stmh/osg,XiaoCC/osg,ntoand/osg,koshman86/osg,ghub/osg,stmh/osg,omega-hub/osg,koshman86/osg,koshman86/osg,omega-hub/osg