Fixes and tests for Orientation class.

git-svn-id: http://osgworks.googlecode.com/svn/trunk@498 c67418bc-a6eb-11de-8ba5-91705c1537ed
Additional code cleanup.

git-svn-id: http://osgworks.googlecode.com/svn/trunk@499 c67418bc-a6eb-11de-8ba5-91705c1537ed
More code cleanup and fixes.

git-svn-id: http://osgworks.googlecode.com/svn/trunk@500 c67418bc-a6eb-11de-8ba5-91705c1537ed