Added NTupleEventInfo and trial NTupleStubs
Edited NTupleStubs

Added style fix of unsigned int --> unsigned
Edited NTupleStubs [2]

Added std::vector<std::vector<blah> > in NTupleMaker, and added classes.h, classes_def.xml.
Added a dummy producer in 'plugin' directory to enable dictionary generation.
Merge branch 'feature-ntupletools'