Added GL_EXT_texture_border_clamp support for GLES
Added GL_EXT_texture_border_clamp support for GLES

openscenegraph/osg,marchelbling/osg,marchelbling/osg,marchelbling/osg,scrawl/osg,openscenegraph/osg,jtorresfabra/osg,marchelbling/osg,openscenegraph/osg,scrawl/osg,openscenegraph/osg,jtorresfabra/osg,scrawl/osg,scrawl/osg,jtorresfabra/osg,jtorresfabra/osg