Made the static mutex a pointer to a static mutex to get round a exit problem on deletion of the plugin.
Made the static mutex a pointer to a static mutex to get round a exit
problem on deletion of the plugin.


git-svn-id: 23b6355f2bb369032457de4eb5f713ee134f73a8@3194 16af8721-9629-0410-8352-f15c8da7e697

joevandyk/osg,joevandyk/osg,joevandyk/osg,joevandyk/osg,joevandyk/osg