HTTP-Response code plugin

imported from gnuheidix/munin-plugins
Fix mediawiki_api when called with admins arg
It was using wrong var and was missing a break
Tested successfully
Create postfwd-rbl
Create sge_queue_xml_

Wildcard-plugin to monitor Grid Engine queue state.
Using qstat xml output to generate stats.
Graph output optimized.
Summary of a list of queues possible.
Update backuppc plugin, fix issues with hostnames with dot(s) (.)

We encountered an issue where the hostnames in backuppc had also the domain/subdomain names. As dots are not allowed in munin datasource names we had to fix the backuppc script. Ours is as above, you can find the explanation for clear_fieldnames at : http://munin-monitoring.org/wiki/notes_on_datasource_names.
Update sge_queue_xml_

changed to "committed by"
Merge branch 'pr/378'
Merge branch 'pr/382'
Merge branch 'pr/388'
Merge branch 'pr/389'
Merge branch 'pr/391'