disttags from f16 on

[Dennis Gilmore]

Hey all, this is a heads up that with the branching of f16  we have dropped 
dist- from the tags and targets in koji.

the target that should be used is always <git branch>-candidate so f16-
candidate it will always be correct. they have been added retroactively. as a 
result after f16 is out i plan to take an outage and rename all of the epel 
branches from el4 ->epel-4 el5->epel5 el6->epel6 git to make it a bit clearer.

Dennis