message: XSDKDefaults tweaks
diff: IF (NOT COMMAND PRINT_VAR)
  FUNCTION(PRINT_VAR VAR_NAME)
  - MESSAGE("-- " "${VAR_NAME} = '${${VAR_NAME}}'")
  + MESSAGE(STATUS "${VAR_NAME} = '${${VAR_NAME}}'")
  ENDFUNCTION()
  ENDIF()
  @@ -96,7 +96,7 @@ IF ("${USE_XSDK_DEFAULTS_DEFAULT}" STREQUAL "")
  ENDIF()
  SET(USE_XSDK_DEFAULTS ${USE_XSDK_DEFAULTS_DEFAULT} CACHE BOOL
  "Use XSDK defaults and behavior.")
  -#PRINT_VAR(USE_XSDK_DEFAULTS)
  +PRINT_VAR(USE_XSDK_DEFAULTS)
  SET_DEFAULT(XSDK_ENABLE_C TRUE)
  SET_DEFAULT(XSDK_ENABLE_CXX TRUE)
  @@ -181,6 +181,10 @@ IF (USE_XSDK_DEFAULTS)
  ENDIF()
  +#
  +# Set TPL MFEM_USE_* Defaults
  +#
  +
  IF (DEFINED TPL_ENABLE_MPI)
  SET(MFEM_USE_MPI ${TPL_ENABLE_MPI} CACHE BOOL "Enable MPI parallel build" FORCE)
  ENDIF()
  