Turn off -fno-strict-aliasing for HAVE_GCC; it makes no difference to

the compiler output and is therefore ipso facto not necessary. I'll
leave it on for HAVE_LLVM as I can't check that tonight.

(If there is invalid code in here that actually requires it, let me
know so I can fix things properly.)

usr.sbin/dumplfs/Makefile

@@ -1,4 +1,4 @@
-#	$NetBSD: Makefile,v 1.15 2012/08/10 12:10:28 joerg Exp $
+#	$NetBSD: Makefile,v 1.16 2013/08/11 03:49:24 dholland Exp $
 #	@(#)Makefile	8.1 (Berkeley) 6/18/93
 
 WARNS?=	3	# XXX -Wsign-compare
@@ -10,7 +10,7 @@ SRCS=	dumplfs.c lfs_cksum.c misc.c
 .PATH:	${NETBSDSRCDIR}/sys/ufs/lfs
 MAN=	dumplfs.8
 
-.if defined(HAVE_GCC) || defined(HAVE_LLVM)
+.if defined(HAVE_LLVM)
 COPTS+=	-fno-strict-aliasing
 .endif