message: Updates in INSTALL for mfem-4.2 release:
  Use hypre 2.20.0 instead of 2.16.0 in the example
  Mesquite is deprecated and will be removed
  Versions for ADIOS and HIOP
diff: @@ -19,10 +19,10 @@ requires an MPI C++ compiler, as well as the following external libraries:
  http://glaros.dtc.umn.edu/gkhome/metis/metis/overview
  The hypre dependency can be downloaded as a tarball from GitHub or from the
  -project webpage https://www.llnl.gov/casc/hypre. For example, the 2.16.0 release
  +project webpage https://www.llnl.gov/casc/hypre. For example, the 2.20.0 release
  of hypre is available at
  - https://github.com/hypre-space/hypre/archive/v2.16.0.tar.gz
  + https://github.com/hypre-space/hypre/archive/v2.20.0.tar.gz
  The METIS dependency can be disabled but that is not generally recommended, see
  the option MFEM_USE_METIS.
  @@ -558,11 +558,12 @@ The specific libraries and their options are:
  for CUDA.
  URL: http://computation.llnl.gov/projects/sundials/sundials-software
  Options: SUNDIALS_OPT, SUNDIALS_LIB.
  - Versions: SUNDIALS >= 5.0.0, SUNDIALS >= 5.4.0 for CUDA suppport.
  + Versions: SUNDIALS >= 5.0.0, SUNDIALS >= 5.4.0 for CUDA support.
  - Mesquite (optional), used when MFEM_USE_MESQUITE = YES.
  URL: http://trilinos.org/oldsite/packages/mesquite
  Options: MESQUITE_OPT, MESQUITE_LIB.
  + The Mesquite support is deprecated and will be removed in the future.
  - SuiteSparse (optional), used when MFEM_USE_SUITESPARSE = YES.
  URL: http://faculty.cse.tamu.edu/davis/suitesparse.html
  @@ -648,6 +649,7 @@ The specific libraries and their options are:
  - ADIOS2 (optional) used when MFEM_USE_ADIOS2 = YES.
  URL: https://adios2.readthedocs.io/
  + Versions: ADIOS >= 2.5.0.
  - PUMI (optional), used when MFEM_USE_PUMI = YES.
  URL: https://scorec.rpi.edu/pumi
  @@ -658,6 +660,7 @@ The specific libraries and their options are:
  - HiOp (optional), used when MFEM_USE_HIOP = YES.
  URL: https://github.com/LLNL/hiop
  Options: HIOP_OPT, HIOP_LIB.
  + Versions: HIOP >= 0.1.
  - GSLIB (optional), used when MFEM_USE_GSLIB = YES. The gslib library must be
  built prior to the MFEM build, as follows: download gslib-1.0.5, untar it at
  