directly to the console rather than logging at INFO (which doesn't
output anything for WARN).
There should really be a WriteLine method on ICommandConsole so all
of the different commands don't have to figure out where the command
output should go.
This is to deal with the hundred lines of command splurge when one previously typed "help"
Modelled somewhat on the mysql console
One can still type help <command> to get per command help at any point.
Categories capitalized to avoid conflict with the all-lowercase commands (except for commander system, as of yet).
Does not affect command parsing or any other aspects of the console apart from the help system.
Backwards compatible with existing modules.
Robert Adams