For models with locked transforms (i.e., props), don't bother trying to  keep the world bound up-to-date; it won't change, and updateWorldVectors  has no effect.
For models with locked transforms (i.e., props), don't bother trying to 
keep the world bound up-to-date; it won't change, and updateWorldVectors 
has no effect.


git-svn-id: b675b909355d5cf946977f44a8ec5a6ceb3782e4@56 ed5b42cb-e716-0410-a449-f6a68f950b19

threerings/nenya,threerings/nenya