Museekd crash when conf files doesn't exist

[gandalf]

If you run museekd without having run musetup first, the daemon crash and print the python traceback to stdout :

gandalf@rexxar:/etc/apache2$ museekd museekd :: Version 0.1.9 :: Museek Daemon Plus

[Museekal.CM.DBG] error creating epoll fd I/O warning : failed to load external entity "/home/gandalf/.museekd/config.xml" [Muconf.NC.DBG] Exception (Couldn't create parsing context) caught while parsing configuration database I/O warning : failed to load external entity "/home/gandalf/.museekd/config.xml" [Muconf.NC.DBG] Exception (Couldn't create parsing context) caught while parsing configuration database I/O error : No such file or directory terminate called after throwing an instance of 'xmlpp::exception'

what(): do_write_to_file() failed.

Aborted

It should be nicer to get a message like "No configuration file found. You may consider running musetup (musetup(1)) or run museekd with --config /path/to/conf/file."

[daelstorm]

Modified the failed loading config message to include some advice about using musetup.