Bug fix to edmProvDump

Bug fix to edmProvDump. Bug created when we stopped persistently writing
ProcessConfigurations to output files on 8/20/2013. Add unit test that
would have caught this failure.
Move unit test from FWCore/Integration to IOPool/Common.
Merge pull request #1012 from wddgit/fixEdmProvDump

Framework fixes -- Bug fix to edmProvDump