Modifications to allow building with OSG > 3.1.8.
Change version to v3.0 since we are removing functionality.
Remove the deprecated CountStateSets visitor.

git-svn-id: http://osgworks.googlecode.com/svn/trunk@545 c67418bc-a6eb-11de-8ba5-91705c1537ed
Version bump.

git-svn-id: http://osgworks.googlecode.com/svn/trunk@546 c67418bc-a6eb-11de-8ba5-91705c1537ed