Adding histo to measured average X for H and Z
- merge with Tai's changes
- removed cvs specific labels
- updated Jet MC smearing logic
cvs version 1.23 (fixes computation of jet energy fractions in case JEC are applied to jet four-vector)
cmsRun returns non-zero if caught unix signal

If any of the signals cmsRun catches (SIGINT and SIGUSR2) are caught, cmsRun now returns a non zero value. This was requested by data ops.
Backported from CMSSW_7_0_X.

Conflicts:
	FWCore/Framework/bin/cmsRun.cpp
Fix rho collection for L1FastJet.
Merge pull request #1545 from vadler/53X-fixJetTools

53X fix jet tools
Merge pull request #1542 from Dr15Jones/cmsRunReturnNoneroOnSignalFor5_3_X

cmsRun returns non-zero if caught unix signal
Merge pull request #1482 from veelken/5_3_X_PFJetIDSelectionFunctor_fix

cvs version 1.23 (fixes computation of jet energy fractions in case JEC ...
Merge pull request #1472 from veelken/from-CMSSW_5_3_X_2013-11-08-1400

- merge with Tai's changes
Merge pull request #1408 from inugent/ValidationZXPatch

Adding histo to measured average X for H and Z