Had to remove the drop/create of cc_users because some obscure views make use of it. No existing code expects cc_users to contain "bio" anyway, so recreating the view was a matter of tidiness, not need. Drop ... cascade would work but would break ecommerce and dotlrn-ecommerce, and likely some other packages, so this seems the lesser of two evils.
Fixed up some "bio" related upgrade stuff, including protection against trying to upgrade sites that had already applied the upgrade against 5.5 (that script didn't make it into the repository however).