Change x11-ssh-askpass upstream to Github.

INSTALL

@@ -79,7 +79,7 @@ http://www.gnome.org/
 Alternatively, Jim Knoble <jmknoble@pobox.com> has written an excellent X11
 passphrase requester. This is maintained separately at:
 
-https://web.archive.org/web/20131006102910/http://jmknoble.net/software/x11-ssh-askpass/
+https://github.com/openssh/x11-ssh-askpass
 
 LibEdit:
 

contrib/README

@@ -19,7 +19,7 @@ X11 SSH Askpass:
 Jim Knoble <jmknoble@pobox.com> has written an excellent X11
 passphrase requester. This is highly recommended:
 
-https://web.archive.org/web/20131006102910/http://jmknoble.net/software/x11-ssh-askpass/
+https://github.com/openssh/x11-ssh-askpass
 
 
 In this directory

contrib/redhat/openssh.spec

@@ -72,7 +72,7 @@ Release: %{rel}
 %endif
 URL: https://www.openssh.com/portable.html
 Source0: https://ftp.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-%{version}.tar.gz
-Source1: https://web.archive.org/web/20131006102910/http://jmknoble.net/software/x11-ssh-askpass/x11-ssh-askpass-%{aversion}.tar.gz
+Source1: https://github.com/openssh/x11-ssh-askpass/releases/download/v%{aversion}/x11-ssh-askpass-%{aversion}.tar.gz
 License: BSD
 Group: Applications/Internet
 BuildRoot: %{_tmppath}/%{name}-%{version}-buildroot