Attempt to count the jobs, not tasks, in the case of Multicast Jobs.

git-svn-id: https://svn.code.sf.net/p/freeghost/code/trunk@2605 71f96598-fa45-0410-b640-bcd6f8691b32
More appropriate counting mechanism to only get the unique id's of the multicast jobs.

git-svn-id: https://svn.code.sf.net/p/freeghost/code/trunk@2606 71f96598-fa45-0410-b640-bcd6f8691b32