pmix: fix compilation error

compilation failed because of missing prototypes when configure'd with --enable-debug --enable-picky on a CentOS 7 box

opal/mca/pmix/pmix1xx/pmix/src/class/pmix_object.h

@@ -12,6 +12,8 @@
  *                         All rights reserved.
  * Copyright (c) 2007      Cisco Systems, Inc.  All rights reserved.
  * Copyright (c) 2013-2015 Intel, Inc. All rights reserved
+ * Copyright (c) 2015      Research Organization for Information Science
+ *                         and Technology (RIST). All rights reserved.
  * $COPYRIGHT$
  *
  * Additional copyrights may follow
@@ -125,6 +127,8 @@
 #include <stdlib.h>
 #endif  /* HAVE_STDLIB_H */
 
+#include "include/pmix/rename.h"
+
 
 BEGIN_C_DECLS