* 'create_tables.pgsql'
    - Renamed table maildir to maillocation
    - Added transport id (tid) to table domains, for default transport
* 'VirtualMailManager/MailLocation.py'
* 'VirtualMailManager/Transport.py'
    - Added to repository
* 'VirtualMailManager/constants/ERROR.py'
    - Added error codes for MailLocation and Transport classes
* 'VirtualMailManager/Exceptions.py'
    - Added exception classes for MailLocation and Transport
# $Id$
- general
    - add transport to user tbl (per account) / fall back transport via dom tbl
    - make default transport configurable via vmm.cfg (for domains and
      accounts
    - write manpages
- vmm
    - add support for relocated_map
- VirtualMailManager/Alias.py
    - check if account exists, when destination is in the same domain