Fixed line endings


git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@14350 16af8721-9629-0410-8352-f15c8da7e697
Added virtual destructors


git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@14351 16af8721-9629-0410-8352-f15c8da7e697