New virtualmin-mailman module version 2.9

I've added a new version of the virtualmin-mailman module to the repository. It fixes the problem on Fedora Core 4 of calling the mailman executable with the wrong path. An additional configuration variable has been added to support the additional location of files on FC4. This update also corrects incorrect versioning of the RPM package versus the version that Webmin knows about.

To update on Fedora, CentOS, RHEL:

yum update wbm-virtualmin-mailman

Or, on SUSE:

yast install wbm-virtualmin-mailman