Heppy: core and object analyzers can be imported with *
HeppyCore: move heppy.py to HeppyCore/python/framework and add heppy script (using ipython)
TTHAnalysis mcAnalysis: support trees produced by Heppy, which are just called 'tree'
port ttHLepSkimmer to Heppy
Heppy: autophobj: adatpt to 72X accessors for lost hits and b-tagging, and chargedHadronIso->chargedHadronIsoR
Migrated first few modules in the susy sequence to Heppy.

Can now run susy multilepton with Heppy
   heppy Test run_susyMultilepton_cfg.py -p 0 -N 2000

Implemented:
 - migration of some basic modules to Heppy (e.g. SkimAnalyzerCount)
 - lepton selection performed with the Heppy LepAnalyzer
   FIXME: MVA electron id not implemented, using cut-based
          POG_Cuts_ID_2012_Veto_full5x5 id for the moment
 - lepton skimmer taken from ttHAnalysis (migrated to Heppy API)
 - configuration of tree producer (almost all commented out)
 - component still configured by hand only for testing, not
   yet touched samples file
 - nothing else migrated (Gen & MC, Jets, MET, ...)

For the leptons, validated that it's ok wrt CMGTools standalone
except for parts depeninding on MVA electron id, btag, MC match