Add missing ABI mangling to C APIs and encoded strings

Common/Core/vtkABINamespace.h.in

Common/Core/vtkFloatingPointExceptions.cxx

Common/Core/vtkVersion.cxx

Common/Core/vtkVersion.h

Common/DataModel/vtkAbstractCellArray.cxx

Common/Misc/vtkResourceFileLocator.h

IO/Engys/vtkBTSReader.cxx

IO/XML/vtkXMLWriterC.cxx

IO/XML/vtkXMLWriterC.h

Infovis/Boost/vtkVariantBoostSerialization.h

Rendering/CellGrid/CMakeLists.txt

Rendering/LICOpenGL2/CMakeLists.txt

Rendering/OpenGL2/CMakeLists.txt

Rendering/OpenGL2/vtkXOpenGLRenderWindow.cxx

Rendering/OpenVR/CMakeLists.txt

Rendering/Parallel/CMakeLists.txt

Rendering/ParallelLIC/CMakeLists.txt

Rendering/VR/CMakeLists.txt

Rendering/VolumeOpenGL2/CMakeLists.txt

Testing/Core/vtkTestUtilities.h