[+] Generator/HeavyIon
update seq
remove basicHepMCHeavyIonValidation from basicGenTest_seq
Update according to @deguio suggestion. Also protect against null
pointer.
Update code to match new Wrapper constructor API

The Wrapper class switch from using a std::auto_ptr to a std::unique_ptr.
This code was missed in the first pass of updating all code to use the
new API.
Merge pull request #5203 from Dr15Jones/updateToNewWrapperAPI

Update code to match new Wrapper constructor API
Merge pull request #5193 from BetterWang/HeavyIonDQM_from-CMSSW_7_2_0_pre3

Heavy ion dqm from cmssw 7 2 0 pre3
Merge remote branch 'origin/CMSSW_7_2_X' into CMSSW_7_0_X