Update from netbsd-1-1; give slow HP-IB disks a chance to recover by doing

a "sync; sleep 2" right before unmounting the target filesystems.

distrib/hp300/miniroot/inst/install.sh

@@ -1,5 +1,5 @@
 #!/bin/sh
-#	$NetBSD: install.sh,v 1.2 1995/11/07 08:30:45 thorpej Exp $
+#	$NetBSD: install.sh,v 1.3 1995/11/07 10:35:25 thorpej Exp $
 #
 # Copyright (c) 1995 Jason R. Thorpe.
 # All rights reserved.
@@ -1114,6 +1114,7 @@ get_timezone
 )
 
 # Unmount all filesystems and check their integrity.
+sync; sleep 2
 umount -a
 echo "Checking filesystem integrity..."
 fsck -pf