invoke IMDX_LIB_METIS directly

[[Imported from SVN: r4666]]

m4/dune_all.m4

@@ -102,7 +102,9 @@ AC_SUBST(DUNEWEBDIR, $with_duneweb)
   AC_REQUIRE([DUNE_PATH_AMIRAMESH])
   AC_REQUIRE([DUNE_PATH_PSURFACE])
   AC_REQUIRE([DUNE_MPI])
-  AC_REQUIRE([IMMDX_LIB_METIS])
+  # call IMDX_LIB_METIS directly and not via AC_REQUIRE
+  # because AC_REQUIRE support not allow parameters
+  IMMDX_LIB_METIS(,[true])
   AC_REQUIRE([DUNE_PATH_PARMETIS])
   AC_REQUIRE([DUNE_PATH_SUPERLU])
   AC_REQUIRE([DUNE_PATH_SUPERLU_DIST])