ParaView 5.8.0: Windows installers do not include VCOMP140.DLL

VCOMP140.DLL is needed when some code is linked with OpenMP on MSVC. On systems without an updated vcruntime, the fact that this is missing prevents ParaView from starting (see the original discussion).

To fix, it looks like we need to set CMAKE_INSTALL_OPENMP_LIBRARIES to 1 prior to including include (InstallRequiredSystemLibraries). OR - we need to disable OpenMP altogether on Windows builds. I do not know what is enabling OpenMP on Windows.

/cc @ben.boeckel