Changed the shadow texture implemention to use CLAMP_TO_BORDER for the WRAP_S and _T modes.  Also set the border colour to 1,1,1,1 to ensure problem blending.
Changed the shadow texture implemention to use CLAMP_TO_BORDER for the
WRAP_S and _T modes.  Also set the border colour to 1,1,1,1 to ensure
problem blending.


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