remove RecoMET/Configuration/python/RecoHTMET_cff.py
remove RecoMET/METProducers/python/HTMET_cfi.py
stop testing htMet
remove RecoMET/METProducers/test/recoMET_htMet_cfg.py
Add missing includes
Merge pull request #4007 from TaiSakuma/metdev-72X-140525_03

Remove unused files in RecoMET.
Merge pull request #4193 from wmtan/AddMissingIncludes

Add missing includes.
Merge remote branch 'origin/CMSSW_7_2_X' into CMSSW_7_0_X