Update example exception-logging code to write exceptions to the Exim paniclog instead of the mainlog.
Update example exception-logging code to write exceptions
to the Exim paniclog instead of the mainlog.

SpamExperts/py-exim-localscan,barryp/py-exim-localscan,barryp/py-exim-localscan,barryp/py-exim-localscan,SpamExperts/py-exim-localscan