New observer to write intermediate fit results in root tree and analysis examples.

App/App.pro

App/inc/App.h

App/inc/AppLinkDef.h

App/inc/FitSuiteHelper.h

App/inc/ROOTMinimizer.h

App/inc/TreeEventStructure.h

App/src/EventFrame.cpp

App/src/FitSuiteHelper.cpp

App/src/TestFittingModule.cpp

App/src/TestMesoCrystal2.cpp

App/src/TestRootTree.cpp

App/src/TreeEventStructure.cpp

App/src/main.cpp

Core/Core.pro

Core/Tools/inc/IObserver.h

Core/Tools/src/IObserver.cpp

Examples/Analysis/RootMacros/README

Examples/Analysis/RootMacros/ex01_MesoGif/MesoData.C

Examples/Analysis/RootMacros/ex01_MesoGif/MesoData.h

Examples/Analysis/RootMacros/ex01_MesoGif/analysis1.C