> Modified Files:
> 	src/sys/kern: kern_lock.c
> 
> Log Message:
> Nuke __HAVE_SPLBIGLOCK.
 
This breaks compiles with !defined(MULTIPROCESSOR) && defined(LOCKDEBUG):

kern_rwlock.o: In function `rw_vector_enter':
/usr/src/sys/kern/kern_rwlock.c:231: undefined reference to `kernel_lock'

The relevant section of code is this:

#ifdef LOCKDEBUG
	if (panicstr == NULL) {
		simple_lock_only_held(NULL, "rw_enter");
		LOCKDEBUG_BARRIER(&kernel_lock, 1);
	}
#endif

Is the proper fix to #ifdef the LOCKDEBUG_BARRIER bit, or to nuke it
entirely?