change comment lines in SpecificGenMETData
change comment lines in SpecificCaloMETData
change "double" to "float" in SpecificPFMETData
add constructor to SpecificCaloMETData to initialize the variables
stop initializing SpecificCaloMETData in CaloSpecificAlgo because SpecificCaloMETData has now a constructor
change "double" to "float" in SpecificCaloMETData
add constructor to SpecificGenMETData to initialize the variables
stop initializing SpecificGenMETData in GenSpecificAlgo
change "double" to "float" in SpecificGenMETData
Merge pull request #3529 from TaiSakuma/metdev-71X-140426_01

Reco -- change "double" to "float" in DataFormats/METReco