VMM/maillocation: MailLocation.__init__(): take a 'format' name, instead of a 'directory' name. - added function known_format() to the module. VMM/Account: Adjusted to above changes.

# -*- coding: UTF-8 -*-
# Copyright (c) 2007 - 2010, Pascal Volk
# See COPYING for distribution information.

MISSING_ARGS = 1
UNKNOWN_COMMAND = 2
USER_INTERRUPT = 3