Comment 1 for bug 149335

I've posted a psycopg2 patch to the mailing list at:
    http://thread.gmane.org/gmane.comp.python.db.psycopg.devel/4384

When it gets applied, the list of errors we want to retry will be limited to just psycopg2.IntegrityError and psycopg2.extensions.TransactionRollbackError.