Removed all the plugins BUILD_OSG_* options as these just get in the way of  browsing standard CMake options.
Removed all the plugins BUILD_OSG_* options as these just get in the way of 
browsing standard CMake options.


git-svn-id: 23b6355f2bb369032457de4eb5f713ee134f73a8@7119 16af8721-9629-0410-8352-f15c8da7e697

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