added back usr/share/man/cat8/tahoe; we still ship these man pages,

and we don't want to break DESTDIR builds.
this raises the question, do we really need to ship tahoe man pages?

src/etc/mtree/4.4BSD.dist

@@ -1,4 +1,4 @@
-#	$OpenBSD: 4.4BSD.dist,v 1.30 1997/02/28 11:42:56 niklas Exp $
+#	$OpenBSD: 4.4BSD.dist,v 1.31 1997/03/05 04:34:26 flipk Exp $
 
 /set type=dir uname=root gname=wheel mode=0755
 # .
@@ -1093,6 +1093,11 @@ sun3
 # ./usr/share/man/cat8/sun3
 ..
 
+# ./usr/share/man/cat8/tahoe
+tahoe
+# ./usr/share/man/cat8/tahoe
+..
+
 # ./usr/share/man/cat8/vax
 vax
 # ./usr/share/man/cat8/vax