Copyright Digital Equipment Corp. All rights reserved.

Description

   This routine changes the object name in the mutex object
   specified by the mutex argument to the value specified by the
   name argument. To set a new mutex object's object name, call this
   routine immediately after initializing the mutex object.

   The object name is a C language string and provides an identifier
   that is meaningful to a person debugging a multithreaded
   application. The maximum number of characters in the object name
   is 31.