NAME
        AssignLock -- Creates an assignment to a locked object (V36)

   SYNOPSIS
        success = AssignLock(name,lock)
        D0                    D1   D2

        bool assignlock(strptr,bptr)

   FUNCTION
        Sets up an assign of a name to a given lock.  Passing NULL for a lock
        cancels any outstanding assign to that name.  If an assign entry of
        that name is already on the list, this routine replaces that entry.  If
        an entry is on the list that conflicts with the new assign, then a
        failure code is returned.

        NOTE: you should not use the lock in any way after making this call
        successfully.  It becomes the assign, and will be unlocked by the
        system when the assign is removed.  If you need to keep the lock,
        pass a lock from duplock() to assignlock().

   INPUTS
        name - Name of device to assign lock to (without trailing ':')
        lock - lock associated with the assigned name

   RESULT
        success - Success/failure indicator.  On failure, the lock is not
                  unlocked.

   SEE ALSO
        lock(), assignadd(), assignpath(), assignlate(), duplock(),
        remassignlist()