Ensured that rescue_responses is only augmented in Rails versions that support it.
Ensured that rescue_responses is only augmented in Rails versions that support it.

git-svn-id: c3b4a417ebf20afd637fe84e951132e3c6e13180@28 aff2ea43-9cdb-4955-b5a5-e63d6d2749c7

cch1/authorize,cch1/authorize