upstream: some cleanup for BindInterface and ssh-keyscan;

OpenBSD-Commit-ID: 1a719ebeae22a166adf05bea5009add7075acc8c
diff --git a/sftp.1 b/sftp.1
index 529be7f..43e0442 100644
--- a/sftp.1
+++ b/sftp.1
@@ -1,4 +1,4 @@
-.\" $OpenBSD: sftp.1,v 1.113 2017/11/03 03:46:52 djm Exp $
+.\" $OpenBSD: sftp.1,v 1.114 2018/02/23 07:38:09 jmc Exp $
 .\"
 .\" Copyright (c) 2001 Damien Miller.  All rights reserved.
 .\"
@@ -22,7 +22,7 @@
 .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: November 3 2017 $
+.Dd $Mdocdate: February 23 2018 $
 .Dt SFTP 1
 .Os
 .Sh NAME
@@ -194,6 +194,7 @@
 .It AddressFamily
 .It BatchMode
 .It BindAddress
+.It BindInterface
 .It CanonicalDomains
 .It CanonicalizeFallbackLocal
 .It CanonicalizeHostname