removed flags-aware versions
update the format of comment lines, indent, white spaces
delete "MET::dSignificance()" so "significance" can be removed from "CorrMETData"
add const & here and there, avoid copy cluster by value in local vectors....
removed half of eta phi, the other are difficult even to eval in float due to the way root vectors are coded
speed up (avoid) eta-phi computations. fix bug in deltaphi
Merge pull request #3314 from TaiSakuma/metdev-71X-140411_01

Reco -- code-cleaning in RecoMET
Merge pull request #3299 from argiro/clustertoolssimplification

Reco -- Remove from EcalClusterTools flags-aware versions of functions
Merge pull request #3317 from VinInn/GoodSeed

RecoParticleFlow/PFTracking -- Good seed
Merge remote branch 'origin/CMSSW_7_1_X' into CMSSW_7_0_X