remove unused member variable in PFMETProducer
clean-code in PFSpecificAlgo
change argument type of PFSpecificAlgo::addInfo(), removing dependency on Handle
clean-code more in PFSpecificAlgo
update METProducer to adapt new argument type of PFSpecificAlgo
Merge pull request #1821 from TaiSakuma/metdev-70X-131213_01

Reco cleanup -- code-cleaning in RecoMET