migrate existing card keys for Unicode fix+discussion

any examples I can use for testing?

implemented a "self-healing" fix for this so that cards with broken keys have their keys regenerated when found in a wql search.

  --Ethan McCutchen.....Mon Feb 07 23:07:44 -0800 2011

That explains the otherwise-odd WagnBot updates I've been seeing in recent changes. Nice!

  --John Abbe.....Tue Feb 08 04:05:58 -0800 2011