Lower log priority from PANIC to ERROR for message status handling definitive errors (reserve PANIC priority to permanent data inconsistency).
When a PANIC level error happens, re-raise after logging instead of simply returning.


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@19090 20353a03-c40f-0410-a6d1-a30d3c3de9de