message: Updated manual edits for clang/gfortran host-config on bg/q.
  Note: Had to pass in explicit library flags for hdf's libm and libdl to
  work around a bug in cmake's FindHDF which gave absolute paths to
  shared libraries on bg/q, leading to a compiler error.
  Also passed in helper path for finding mpif.h
diff: +##
  +## Copyright (c) 2017, Lawrence Livermore National Security, LLC.
  +##
  +## Produced at the Lawrence Livermore National Laboratory.
  +##
  +## LLNL-CODE-741217
  +##
  +## All rights reserved.
  +##
  +## This file is part of Axom.
  +##
  +## For details about use and distribution, please read axom/LICENSE.
  +##
  +
  ##############################################################################
  # !---------------------------------------------------------------------------
  ##############################################################################
  ##############################################################################
  set(ENABLE_DOCS OFF CACHE BOOL "")
  -set(ENABLE_PYTHON OFF CACHE BOOL "")
  set(CMAKE_SKIP_RPATH TRUE CACHE BOOL "")
  -set(HDF5_USE_STATIC_LIBRARIES "ON")
  +
  +# Manually set up HDF5 library dependencies for BGQ to bypass errors from CMake's FindHDF5
  +set(HDF5_C_LIBRARY_m "-lm" CACHE STRING "")
  +set(HDF5_C_LIBRARY_dl "-ldl" CACHE STRING "")
  ##############################################################################
  # MPI - manually added for now
  ##############################################################################
  set(ENABLE_MPI ON CACHE BOOL "")
  -# Note: On BGQ, CMake uses wrong linker flags when using find MPI, This allows us use the wrapper directly via
  -# the CMake's compiler variables.
  +
  +# Note: On BGQ, CMake uses the wrong linker flags when using find MPI,
  +# Disabling FindMPI allows us to use the wrapper directly via the CMake compiler variables.
  set(ENABLE_FIND_MPI OFF CACHE BOOL "")
  +# Pass in an explicit path to help find mpif.h
  +set(MPI_Fortran_INCLUDE_PATH "/usr/local/tools/deg/drivers/V1R2M0/ppc64/comm/gcc/include" CACHE PATH "")
  +
  set(MPIEXEC "/usr/bin/srun" CACHE PATH "")
  set(MPIEXEC_NUMPROC_FLAG "-n" CACHE PATH "")
  