In some cases, like whenever devfs file times are zero, the fix(aa) will not

be applied to dev entries.  This leaves us with file times like "Jan 1 1970."
Work around this problem by replacing the tv_sec == 0 check with a
<= 3600 check.  It's doubtful anyone will be booting within an hour of the
Epoch, let alone care about a few seconds worth of nonzero timestamps.  It's
a hackish work around, but it does work and I have not experienced any
negatives in my testing.

Discussed with:	bde
"Ok with me:	phk

sys/fs/devfs/devfs_vnops.c

@@ -425,7 +425,7 @@ devfs_getattr(struct vop_getattr_args *ap)
 
 #define fix(aa)							\
 	do {							\
-		if ((aa).tv_sec == 0) {				\
+		if ((aa).tv_sec <= 3600) {			\
 			(aa).tv_sec = boottime.tv_sec;		\
 			(aa).tv_nsec = boottime.tv_usec * 1000; \
 		}						\