Transport: converted to new-style class; Domain: query reduction
VirtualMailManager/Transport.py:
* added: __slots__
* implemented: __eq__(), __ne__() and __str__()
VirtualMailManager/Domain.py (updateTransport()):
* reduced db lookups/update
# All parameters are described in pgsql_table(5) / PGSQL PARAMETERS
#
# The hosts that Postfix will try to connect to and query from.
hosts = localhost
# The user name and password to log into the pgsql server.
user = postfix
password = some_password
# The database name on the servers.
dbname = mailsys
# The SQL query template used to search the database
query = SELECT transport FROM postfix_transport WHERE address='%s'