Updates from Pavel.
Updates from Pavel.

  1. Storing color of geometry in ColorArray e.g. its don't work when
    lighting off.

  2.  Detecting of alpha channel and automatically enabling blending.


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