Add readpassphrase.c in src/ext

This is taken verbatim from openssh 6.8p1, which appears to have
lightly tweaked it from the openbsd version.

1 files changed, 19 insertions, 0 deletions

diff --git a/LICENSE b/LICENSE
index 48602c13c6..68c9b23374 100644
--- a/LICENSE
+++ b/LICENSE
@@ -249,7 +249,26 @@ As a special exception to the GNU General Public License, if you
 distribute this file as part of a program that contains a
 configuration script generated by Autoconf, you may include it under
 the same distribution terms that you use for the rest of that program.
+===============================================================================
+src/ext/readpassphrase.[ch] are distributed under this license:
+
+  Copyright (c) 2000-2002, 2007 Todd C. Miller <Todd.Miller@courtesan.com>
+
+  Permission to use, copy, modify, and distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
+  Sponsored in part by the Defense Advanced Research Projects
+  Agency (DARPA) and Air Force Research Laboratory, Air Force
+  Materiel Command, USAF, under agreement number F39502-99-1-0512.
 
 ===============================================================================
 If you got Tor as a static binary with OpenSSL included, then you should know: