message: revert makefile change
diff: @@ -332,7 +332,8 @@ MFEM_DEFINES = MFEM_VERSION MFEM_VERSION_STRING MFEM_GIT_STRING MFEM_USE_MPI\
  MFEM_USE_SLEPC MFEM_USE_MPFR MFEM_USE_SIDRE MFEM_USE_CONDUIT MFEM_USE_PUMI\
  MFEM_USE_HIOP MFEM_USE_GSLIB MFEM_USE_CUDA MFEM_USE_HIP MFEM_USE_OCCA\
  MFEM_USE_CEED MFEM_USE_RAJA MFEM_USE_UMPIRE MFEM_USE_SIMD MFEM_USE_ADIOS2\
  - MFEM_USE_MKL_CPARDISO MFEM_USE_AMGX MFEM_USE_MUMPS MFEM_SOURCE_DIR MFEM_INSTALL_DIR
  + MFEM_USE_MKL_CPARDISO MFEM_USE_AMGX MFEM_USE_MUMPS MFEM_SOURCE_DIR\
  + MFEM_INSTALL_DIR
  # List of makefile variables that will be written to config.mk:
  MFEM_CONFIG_VARS = MFEM_CXX MFEM_HOST_CXX MFEM_CPPFLAGS MFEM_CXXFLAGS\
  