5910 libnisdb won't build with modern GCC

*** 18,33 ****
   * information: Portions Copyright [yyyy] [name of copyright owner]
   *
   * CDDL HEADER END
   */
  /*
   * Copyright 2003 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
- #pragma ident   "%Z%%M% %I%     %E% SMI"
- 
  /*
   * DESCRIPTION: Contains a front end to the map locking code. These are called
   *              when a map, or its map_ctrl structure, needs to be locked
   *              for a short time for internal modification. This lock should
   *              not be held between DBM operations.
--- 18,32 ----
   * information: Portions Copyright [yyyy] [name of copyright owner]
   *
   * CDDL HEADER END
   */
  /*
+  * Copyright 2015 Gary Mills
   * Copyright 2003 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  /*
   * DESCRIPTION: Contains a front end to the map locking code. These are called
   *              when a map, or its map_ctrl structure, needs to be locked
   *              for a short time for internal modification. This lock should
   *              not be held between DBM operations.
*** 43,52 ****
--- 42,52 ----
  #include <thread.h>
  #include <synch.h>
  #include <ndbm.h>
  #include "ypsym.h"
  #include "shim.h"
+ #include "stubs.h"
  
  /*
   * FUNCTION :   lock_map_ctrl()
   *
   * DESCRIPTION: Front end to the lock routine taking map_ctrl structure as