Add example skimming file for CMSSW 5.3.9
Refactored matching functions into new KBaseMatchingProducer class
Naming changes, check for duplicated match
removed copyright from auto generated files
added HEPMC metadata handling
Uppercased class name
Removed need for special producer structure
redesigned class specification (needed because of removal of product structure)
Add correct charge calculation for GenParticles
Add test executable for the GenParticle charge function
Add charge to debug information
Small bugfix