OpenSceneGraph-3.3.8 developer release

OpenSceneGraph-3.3.8, released on 12th June 2015, key deliverables in this dev release are:

source package : OpenSceneGraph-3.3.8.zip

svn tag: svn co http://svn.openscenegraph.org/osg/OpenSceneGraph/tags/OpenSceneGraph-3.3.8 OpenSceneGraph