clean up comment lines
add pfChMet to cms.Sequence recoPFMET
add pfChMet to the event contents of RECO and AOD
Merge pull request #3659 from TaiSakuma/metdev-71X-140503_01

Reco -- Add pfChMet to RECO and AOD
Merge remote branch 'origin/CMSSW_7_1_X' into CMSSW_7_0_X