format was undefined so interpreted as built-in function format

Was helping new user RK who asked about audit logs, so wanted to get some into the table.  Turned on write audit, tried to add a supply_item, and got a ticket -- bad args to a lambda deep in dal represent.  Turned out that S3SQLDefaultForm process() was not being passed "format" by S3SQLDefaultForm __call__ so "format" got interpreted as the built-in function format.

I just passed in format, but given that we're "supposed to" switch over to use the format function at some point (and, hey, supposed to go to Python 3 at some point...) maybe we should switch to fmt or something other than format?  There are a *lot* of uses of "format"...  Can change that if you want.  Or should we sic one of our future interns on it?  Or save it for GCI?