From Mathias Froehlich, add search path to enable out of source builds to find include/OpenThreads/Config.
From Mathias Froehlich, add search path to enable out of source builds to find include/OpenThreads/Config.


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