MueLu: kokkos: add logic to cmake for Kokkos Refactor

One cannot use Kokkos Refactor in MueLu without enabling it in Xpetra.
This commit starts throwing an error if that is not the case.

packages/muelu/CMakeLists.txt

@@ -119,6 +119,10 @@ TRIBITS_ADD_OPTION_AND_DEFINE(
   "Enable MueLu code refactored to use Kokkos."
   NO)
 
+IF (${PACKAGE_NAME}_ENABLE_Kokkos_Refactor AND NOT Xpetra_ENABLE_KokkosRefactor)
+  MESSAGE(FATAL_ERROR "Kokkos Refactor in MueLu requires one to also enable Kokkos Refactor in Xpetra (-DXpetra_ENABLE_KokkosRefactor:BOOL=ON).")
+ENDIF()
+
 # Define HAVE_MUELU_STRATIMIKOS if Stratimikos package is enabled
 ASSERT_DEFINED(${PACKAGE_NAME}_ENABLE_Stratimikos)
 GLOBAL_SET(HAVE_${PACKAGE_NAME_UC}_STRATIMIKOS ${${PACKAGE_NAME}_ENABLE_Stratimikos})