do not change parameter order in old functions

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Feature can be activated over admin mailserver settings. when activated websites uid is used instead of standard vmail-uid. this only takes effect if web and mailserver are on the same server, otherwise it will be old behaviour. switching this setting when mailboxes exist doesn't matter. Mailboxfolder will be created with website uid for this. access of postfix and dovecot now works over mysql-table mail_user. virtual_uid_maps is changed from static to mysql-table. for dovecot<->postfix communication protocoll is changed vrom lda to lmtp. disablelmtp-column is added to mail_user-table. uid and gid can be overwritten by remoting.
ONE OPEN ISSUE: since remoting has completly changed and mail_user_add function is missing at the moment, this function now was inclulded again. it is important to add the both new lines to the future function and then remove this new one.

Added a workaround for a bug in courier maildirmake: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=501557

Fixed: FS#1712 - Welcome email in multiserver setup problem (welcome mail not send because MySQL delay)

- replaced "exec('/etc/init.d/" calls with "exec($conf['init_scripts'] . '/' ."
- fixed output wording (typos and more...)

- Fixed a problem with the automatic creation of maildir subfolders.

- added installation instructions for opensuse 11.2 with bind and dovecot
- fixed a bug in bind plugin.
- improved opensuse installer.

Added Support for Sieve mail filtering language on dovecot servers.

Fixed: FS#943 - ErrorCreating Email Mailbox - possibility co create mailbox name with CAPITALletters 

- Fixed bug FS#410 (http://bugtracker.ispconfig.org/index.php?do=details&task_id=410&project=3&order=tasktype&sort=asc).

- Improved installer and updater for multiserver mode. Modules and plugins were only configured if the selected service is available on the server.

- Update server.ini during install
- Changed default vmail directory form /home/vmail to /var/vmail

The mail box quota wasn't being run on mailbox creation. I had previously only fixed it when the mailbox is changed.

They both work fine now.

This is suppose to fix the bug where maildrop and maildirmake doesn't rebuild the /maildirsize file. 

- Fixed bug with maildir creation in mail plugin.

Updated the Debian installation instructions.

Updated ToDo item list.