Drop unneeded cxxcompiler dependency.
Merge pull request #669 from ktf/fix-spurious-cxxcompiler-dependency

Fix spurious cxxcompiler dependency.

The dependency is not required, and it actually makes REM_CXXFLAGS not work correctly anymore.
Update files per @jstupak request.
Merge pull request #670 from degano/data_jetmetobj_upd_71X

Data jetmetobj upd 71 x
Merge remote branch 'origin/IB/CMSSW_7_1_X/stable' into IB/CMSSW_7_0_X/stable