CMakeLists.txt: Revise Kokkos_VERSION check

Revsions suggested by @lucbv
- Allow versions greater than or equal to existing release
- If Kokkos_VERSION is greater than expected develop branch version,
  add warning to update the version check

CMakeLists.txt

@@ -126,10 +126,13 @@ ELSE()
   IF (NOT KOKKOSKERNELS_HAS_TRILINOS AND NOT KOKKOSKERNELS_HAS_PARENT)
     # This is a standalone build
     FIND_PACKAGE(Kokkos REQUIRED)
-    IF((${Kokkos_VERSION} VERSION_EQUAL "4.0.1") OR (${Kokkos_VERSION} VERSION_EQUAL "4.1.00") OR (${Kokkos_VERSION} VERSION_EQUAL "4.1.99") OR (${Kokkos_VERSION} VERSION_EQUAL "4.2.00") OR (${Kokkos_VERSION} VERSION_EQUAL "4.2.99"))
+    IF((${Kokkos_VERSION} VERSION_EQUAL "4.1.00") OR (${Kokkos_VERSION} VERSION_GREATER_EQUAL "4.2.00"))
       MESSAGE(STATUS "Found Kokkos version ${Kokkos_VERSION} at ${Kokkos_DIR}")
+      IF((${Kokkos_VERSION} VERSION_GREATER "4.2.99"))
+        MESSAGE(WARNING "Configuring with Kokkos ${Kokkos_VERSION} which is newer than the expected develop branch - version check may need update")
+      ENDIF()
     ELSE()
-      MESSAGE(FATAL_ERROR "Kokkos Kernels ${KokkosKernels_VERSION} requires Kokkos 4.0.1, 4.1.00, 4.1.99, 4.2.00 or develop (4.2.99)")
+      MESSAGE(FATAL_ERROR "Kokkos Kernels ${KokkosKernels_VERSION} requires 4.1.00, 4.2.00 or develop")
     ENDIF()
   ENDIF()