Fixing HF cluster dependencies
forgot one file, trivial
Made DDValue thread safe

The DDValue is used by multiple threads inside OscarMTProducer while
the active geometry is being created. This modification removed some
global state and made the remaining global state thread safe.
fix to #5149: 1) 'generator' the base set of relval for generators 2) 'extendedgen' extends the base set to a more thorough assesment of GEN 3) the two sets are exclusive
Merge pull request #5290 from franzoni/remove_duplicates_from-CMSSW_7_2_X_2014-09-13-1400

fix to #5149: 'generator' and 'extendedgen' made exclusive
Merge pull request #5289 from Dr15Jones/threadSafeDDValue

Made DDValue thread safe
Merge pull request #5280 from bachtis/HFDependencies

Fixing HF cluster dependencies in unit tests
Merge remote branch 'origin/CMSSW_7_2_X' into CMSSW_7_0_X