revert to assert in Fit; add #include's

Core/CMakeLists.txt

Fit/RootAdapter/ResidualFunctionAdapter.cpp

Fit/TestEngine/IFactory.h

GUI/ba3d/model/geometry.cpp

GUI/ba3d/model/geometry/box.cpp

GUI/ba3d/model/geometry/column.cpp

GUI/ba3d/model/geometry/cuboctahedron.cpp

GUI/ba3d/model/geometry/dodecahedron.cpp

GUI/ba3d/model/geometry/icosahedron.cpp

GUI/ba3d/model/geometry/plane.cpp

GUI/ba3d/model/geometry/ripple.cpp

GUI/ba3d/model/geometry/sphere.cpp

GUI/ba3d/model/geometry/truncbox.cpp

GUI/ba3d/model/model.cpp

GUI/ba3d/view/canvas.cpp

GUI/coregui/Models/BeamDistributionItem.cpp

GUI/coregui/Models/BeamItems.cpp

GUI/coregui/Models/ComboProperty.cpp

GUI/coregui/Models/SessionItem.cpp

GUI/coregui/Models/SessionItem.h