8115 parallel zfs mount

*** 19,28 ****
--- 19,29 ----
   * CDDL HEADER END
   */
  /*
   * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
   * Copyright (c) 2016 by Delphix. All rights reserved.
+  * Copyright 2017 RackTop Systems.
   */
  
  #include <assert.h>
  #include <sys/zfs_context.h>
  #include <sys/avl.h>
*** 32,41 ****
--- 33,44 ----
  #include <sys/spa.h>
  #include <sys/fs/zfs.h>
  #include <sys/refcount.h>
  #include <dlfcn.h>
  
+ extern void nicenum(uint64_t num, char *buf, size_t);
+ 
  /*
   * Routines needed by more than one client of libzpool.
   */
  
  static void