[SCHEMA CHANGE] Bug 220232: short_desc field in the bugs table is no longer allowed to be NULL.  Null summaries would cause BugMail.pm to crash.  (Normally this would only be caused by third party touching of the bugs table, such as bugs manually migrated from another system or inserted by a script - such scripts will now break if they don't set a short_desc)
r= bbaetz, a= justdave