Turn off the coll/ml component if --without-hwloc was given

cmr=v1.8.3:reviewer=jsquyres

This commit was SVN r32621.

ompi/mca/coll/ml/configure.m4

@@ -0,0 +1,18 @@
+# -*- shell-script -*-
+#
+# Copyright (c) 2014      Intel, Inc. All rights reserved.
+# $COPYRIGHT$
+# 
+# Additional copyrights may follow
+# 
+# $HEADER$
+#
+# MCA_coll_ml_CONFIG([action-if-found], [action-if-not-found])
+# -----------------------------------------------------------
+AC_DEFUN([MCA_ompi_coll_ml_CONFIG], [
+    AC_CONFIG_FILES([ompi/mca/coll/ml/Makefile])
+
+    AS_IF([test "$OPAL_HAVE_HWLOC" = 1],
+          [$1],
+          [$2])
+])