message: Working devtools host config for toss3@clang4 with fixed sphinx
  Our third party libraries are once again based on the desired spack commit.
  This reverts several libraries back to a known good state.
diff: # Compiler Spec: clang@4.0.0
  ##################################
  -# CMake executable path: /usr/WS1/axom/thirdparty_libs/builds/2019_03_08_10_00_53/clang-4.0.0/cmake-3.9.6/bin/cmake
  +# CMake executable path: /usr/WS1/axom/thirdparty_libs/builds/2019_03_14_11_48_30/clang-4.0.0/cmake-3.9.6/bin/cmake
  ##############
  # Compilers
  @@ -46,7 +46,7 @@ set(CMAKE_Fortran_COMPILER "/usr/tce/packages/gcc/gcc-4.9.3/bin/gfortran" CACHE
  ##############
  # Root directory for generated TPLs
  -set(TPL_ROOT "/usr/WS1/axom/thirdparty_libs/builds/2019_03_08_10_00_53/clang-4.0.0" CACHE PATH "")
  +set(TPL_ROOT "/usr/WS1/axom/thirdparty_libs/builds/2019_03_14_11_48_30/clang-4.0.0" CACHE PATH "")
  # conduit from uberenv
  set(CONDUIT_DIR "${TPL_ROOT}/conduit-0.3.1" CACHE PATH "")
  @@ -55,7 +55,7 @@ set(CONDUIT_DIR "${TPL_ROOT}/conduit-0.3.1" CACHE PATH "")
  set(MFEM_DIR "${TPL_ROOT}/mfem-3.4.0" CACHE PATH "")
  # hdf5 from uberenv
  -set(HDF5_DIR "${TPL_ROOT}/hdf5-1.8.21" CACHE PATH "")
  +set(HDF5_DIR "${TPL_ROOT}/hdf5-1.8.19" CACHE PATH "")
  # scr not built by uberenv
  @@ -66,18 +66,18 @@ set(RAJA_DIR "${TPL_ROOT}/raja-0.7.0/share/raja/cmake" CACHE PATH "")
  set(UMPIRE_DIR "${TPL_ROOT}/umpire-0.3.2/share/umpire/cmake" CACHE PATH "")
  # python from uberenv
  -set(PYTHON_EXECUTABLE "${TPL_ROOT}/python-2.7.16/bin/python" CACHE PATH "")
  +set(PYTHON_EXECUTABLE "${TPL_ROOT}/python-2.7.15/bin/python" CACHE PATH "")
  set(ENABLE_DOCS ON CACHE BOOL "")
  # doxygen from uberenv
  set(DOXYGEN_EXECUTABLE "${TPL_ROOT}/doxygen-1.8.14/bin/doxygen" CACHE PATH "")
  -# sphinx 1.8.4 from uberenv
  -set(SPHINX_EXECUTABLE "${TPL_ROOT}/python-2.7.16/bin/sphinx-build" CACHE PATH "")
  +# sphinx 1.7.4 from uberenv
  +set(SPHINX_EXECUTABLE "${TPL_ROOT}/python-2.7.15/bin/sphinx-build" CACHE PATH "")
  # shroud 0.10.1 from uberenv
  -set(SHROUD_EXECUTABLE "${TPL_ROOT}/python-2.7.16/bin/shroud" CACHE PATH "")
  +set(SHROUD_EXECUTABLE "${TPL_ROOT}/python-2.7.15/bin/shroud" CACHE PATH "")
  # uncrustify from uberenv
  set(UNCRUSTIFY_EXECUTABLE "${TPL_ROOT}/uncrustify-0.61/bin/uncrustify" CACHE PATH "")
  