Imported from archive.

Imported from archive.

* command (command:show), mudpy.py (command_show): Added a log
parameter to the admin command show, allowing administrative users
to review recent log entries.

* mudpy.conf (internal:logging), mudpy.py (log): Added an in-memory
ring buffer for logging, configurable via the max_log_lines facet.

* mudpy.py (excepthook): Attempt to log any Python interpreter
exceptions.
(log): Implemented a log priority mechanism to allow filtering logs
by importance. Log entries above an administrative account's
loglevel int facet in will be echoed to their owner's socket if
connected.