* 'VirtualMailManager/DomainAlias.py'
    - Implemented:
        + DomainAlias.__init__()
        + DomainAlias._exists()
        + DomainAlias.save()
        + DomainAlias.info()
        + DomainAlias.delete()
* 'VirtualMailManager/VirtualMailManager.py'
    - Updated the following methods to use the DomainAlias class:
        + VirtualMailManager.domain_alias_add()
        + VirtualMailManager.domain_alias_delete()
    - Implemented VirtualMailManager.domain_alias_info()
* 'VirtualMailManager/Domain.py'
    - Deleted methods:
        + Domain._aliasExists()
        + Domain.saveAlias()
    - Deleted module function deleteAlias()
* 'vmm'
    - Replaced some print statements with w_std() function calls
      This eliminates the ugly UnicodeEncodeErrors if the preferred encoding is
      'outdated' (encodings like 'ascii' ;-) )
* 'po/de.po'
* 'po/vmm.pot'
    - updated
If you still have installed vmm 0.3.x you have to proceed this step first:
    * upgrade your vmm installation to version 0.4-r41
If you have installed vmm 0.4/0.4-r41 you have to proceed this steps:
    * stop Postfix and Dovecot
    * backup/dump your database.
    * backup/dump your database!
    
    * start psql and connect to the appropriate database (ex. psql mailsys)
    * update the database: \i update_tables_0.4.x-0.5.pgsql
    * execute upgrade.sh
    * start Dovecot and Postfix
else
     * read INSTALL