From Mattias Helsing, "The addition of the GStreamer cmake find script broke my build because cmake vars weren't passed correctly to find_package_handler_args, so while the find script didn't find a single required GStreamer lib or include path it still reported GSTREAMER_FOUND=TRUE (and then tried to compile the new plugin). This fixes it and correctly reports missing components."
From Mattias Helsing, "The addition of the GStreamer cmake find script broke my build because
cmake vars weren't passed correctly to find_package_handler_args, so
while the find script didn't find a single required GStreamer lib or
include path it still reported GSTREAMER_FOUND=TRUE (and then tried to
compile the new plugin). This fixes it and correctly reports missing
components."


git-svn-id: aa838dfc23441284dd616281de4245daec5d2135@14611 16af8721-9629-0410-8352-f15c8da7e697

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