upstream: lots of typos in comments/docs. Patch from Karsten Weiss

after checking with codespell tool
(https://github.com/lucasdemarchi/codespell)

OpenBSD-Commit-ID: 373222f12d7ab606598a2d36840c60be93568528
diff --git a/auth.h b/auth.h
index 23ce67c..29491df 100644
--- a/auth.h
+++ b/auth.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: auth.h,v 1.95 2018/03/03 03:15:51 djm Exp $ */
+/* $OpenBSD: auth.h,v 1.96 2018/04/10 00:10:49 djm Exp $ */
 
 /*
  * Copyright (c) 2000 Markus Friedl.  All rights reserved.
@@ -89,7 +89,7 @@
 	struct sshkey	**prev_keys;
 	u_int		 nprev_keys;
 
-	/* Last used key and ancilliary information from active auth method */
+	/* Last used key and ancillary information from active auth method */
 	struct sshkey	*auth_method_key;
 	char		*auth_method_info;