Cleaned up many things:
Needless iteration during received packet parsing.
Grouping received packet re-requisite checking so that it can be done
once, not on each packet.
Removed some conversions where a number is converted twice just to be
compared.
Added a derived class for the rare event of an un-authenticated IPSC,
this necessitated moving two global functions into the classese.
Changes to prepare this as a module -- all "user space" packets that
are received now have expliciet callback functions (handily located in
one place)
Moved the supporting characters into the ipsc sub-directory. The config
is the only likely one to be touched.
Improved some of the logging, but also commented it out to make things
run faster when it is not in use.
