Merged revisions 2911-2912 from stable branch.

install/dist/lib/debian60.lib.php

install/dist/lib/fedora.lib.php

install/dist/lib/opensuse.lib.php

install/lib/installer_base.lib.php

install/tpl/debian6_dovecot2.conf.master

install/tpl/debian_dovecot2.conf.master

install/tpl/fedora_dovecot2.conf.master

install/tpl/opensuse_dovecot2.conf.master

interface/web/sites/templates/web_aliasdomain_edit.htm

interface/web/sites/templates/web_domain_redirect.htm

interface/web/sites/templates/web_subdomain_edit.htm