- patch name change

- patch name change
- added courier-imap-myownquery.patch URI in spec
- fixed authdaemon %post /etc/rc.d/init.d/authdaemon s/stop/restart/
- added documentation path authlib/README* in spec
- courier-imap-myownquery.patch seriously modified again
  - fixed get_localpart(), get_domain() and validate_password() functions
  - input dangerous characters are now ommited, NOT replaced by whitespaces
  - added definitions for the symbols marking substitution variables
  - added developer notes documentation
  - code reviewed

Changed files:
    courier-imap-authmysql.patch -> 1.3
    courier-imap-myownquery.patch -> 1.1
    courier-imap.spec -> 1.51