Fixes for Orientation class.

git-svn-id: http://osgworks.googlecode.com/svn/trunk@508 c67418bc-a6eb-11de-8ba5-91705c1537ed
change to using std::string instead of cstring.

git-svn-id: http://osgworks.googlecode.com/svn/trunk@509 c67418bc-a6eb-11de-8ba5-91705c1537ed
Additional testing.

git-svn-id: http://osgworks.googlecode.com/svn/trunk@510 c67418bc-a6eb-11de-8ba5-91705c1537ed
add helper methods for creating quaternions and grabbing hpr.

git-svn-id: http://osgworks.googlecode.com/svn/trunk@511 c67418bc-a6eb-11de-8ba5-91705c1537ed
code update for quat helpers.

git-svn-id: http://osgworks.googlecode.com/svn/trunk@512 c67418bc-a6eb-11de-8ba5-91705c1537ed
update docs.

git-svn-id: http://osgworks.googlecode.com/svn/trunk@513 c67418bc-a6eb-11de-8ba5-91705c1537ed