Hey gang!

With the incoming changes, I'd like to make ExecDB a bit more worth its name, and make it less tied to Buildbot than it is at the moment, and also make some changes to what functionality it provides.

Please, comment!

Thanks, Joza

https://docs.google.com/a/redhat.com/document/d/1sOAn2WJ0-XAJu9ssckevS9-m2BM7DwyGbfUaSHx3Nq0/edit?usp=sharing