latest cmake changes e47862fb8659ef6eec5e1a9345f27a296260f0d2
changed: signal osg1 project
added: first try to get OSG2 cmake system working
changed: first win cmake version
update osg1 build
added: flex/bison support
fixed: win flex/bison
changed: include style for OSG include from < to " so relative includes should work
update cmake files