Log Message:
* Pull in some changes discussed on the Webmin mailing list to allow
  running an individual module's uninstall action

* Add an DEINSTALL_TEMPLATE file that is pulled in by all wbm-* modules
  that will run the module's uninstall action at DEINSTALL time.

* Fix the "time" module to ignore "sched_mode" -- verified \ 
by Jamie
  Cameron on the Webmin mailing list as a bug.

* Fix the "postfix" module to remove its temp files at DEINSTALL time
  so that we cleanly pkg_delete.

Bump the PKGREVISION of sysutils/webmin as well as all sysutils/wbm-*
packages that have uninstall.pl scripts.