From Terry Welsh, "fThis fixes problem where new glClipControl feature would not compile for GLES2 profile"
From Terry Welsh, "fThis fixes problem where new glClipControl feature would not compile for GLES2 profile"


git-svn-id: aa838dfc23441284dd616281de4245daec5d2135@14943 16af8721-9629-0410-8352-f15c8da7e697

jtorresfabra/osg,openscenegraph/osg,marchelbling/osg,marchelbling/osg,jtorresfabra/osg,marchelbling/osg,artoolkit/osg,scrawl/osg,tomasthoresen/osg,scrawl/osg,openscenegraph/osg,artoolkit/osg,artoolkit/osg,scrawl/osg,tomasthoresen/osg,marchelbling/osg,artoolkit/osg,scrawl/osg,tomasthoresen/osg,jtorresfabra/osg,openscenegraph/osg,jtorresfabra/osg,openscenegraph/osg,tomasthoresen/osg