OpenSceneGraph-3.3.7 developer release

OpenSceneGraph-3.3.7, released on 15th April 2015, key deliverables in this dev release are:

source package : OpenSceneGraph-3.3.7.zip

svn tag: svn co http://svn.openscenegraph.org/osg/OpenSceneGraph/tags/OpenSceneGraph-3.3.7 OpenSceneGraph