VMM/{Account,common,Handler}: Improved version_hex(). - common: version_hex() now supports 'serials' > 16. Added version_str() as counterpart to version_hex(). - Account, Handler: updated hardcoded Dovecot versions.

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

MISSING_ARGS = 1
UNKNOWN_COMMAND = 2
USER_INTERRUPT = 3