message: unit test changes and see if windows build works
diff: // terms of the GNU Lesser General Public License (as published by the Free
  // Software Foundation) version 2.1 dated February 1999.
  -// #define CATCH_CONFIG_RUNNER
  -// #include "catch.hpp"
  -// #include "mfem.hpp"
  -
  -// int main(int argc, char *argv[])
  -// {
  -// #ifdef MFEM_USE_MPI
  -// mfem::MPI_Session mpi;
  -// #endif
  +#define CATCH_CONFIG_RUNNER
  +#include "mfem.hpp"
  +#include "catch.hpp"
  -// // There must be exactly one instance
  -// int result = Catch::Session().run(argc, argv);
  -// return result;
  -// }
  +int main(int argc, char *argv[])
  +{
  +#ifdef MFEM_USE_MPI
  + mfem::MPI_Session mpi;
  +#endif
  -#define CATCH_CONFIG_MAIN
  -#include "catch.hpp"
  \ No newline at end of file
  + // There must be exactly one instance
  + int result = Catch::Session().run(argc, argv);
  + return result;
  +}
  \ No newline at end of file
  