Added check to Quat::makeRotate(,,,) to catch zero lengh axis.
Added check to Quat::makeRotate(,,,) to catch zero lengh axis.


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