The proposed fix also seems to address the defect mentioned by Tim and
elaborated on by Samuel Benge in the bugs list for beta 25:
http://news.povray.org/povray.beta-test/thread/%3C47a84bb1%241%40news.povray.org%3E/
The results were checked using the minimal scene provided there.
The Transform_Object routine takes care of transforming objects used in
clipped_by, so calling it would believably fix clipped_by transform {} problems
too.
