#12 Fusions DebugStream object not being used AT ALL

[Chris Thomas]

Fusion has a member variable called errlog. It's of
type DebugStream and it's SEVERLY underused.

in fact, I dont think it's used at all, it should be
used to show critical errors or other stopping errors
out for debugging later, but at the moment, errors or
failures occur, with no information being output that
gives any clue as to what happens.

To correct this, FULL use of this class, including it's
Allow/Deny filters and alternative output locations
should be used in all critical and stop errors, with
perhaps non-critical errors being an option that can be
exercised if required