gnu: Add libssh2.

* gnu/packages/ssh.scm: New file.
* Makefile.am (MODULES): Add it.

Makefile.am

@@ -126,6 +126,7 @@ MODULES =					\
   gnu/packages/screen.scm 			\
   gnu/packages/shishi.scm			\
   gnu/packages/sqlite.scm 			\
+  gnu/packages/ssh.scm				\
   gnu/packages/subversion.scm 			\
   gnu/packages/system.scm			\
   gnu/packages/tcl.scm				\

gnu/packages/ssh.scm

@@ -0,0 +1,49 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2013 Andreas Enge <andreas@enge.fr>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (gnu packages ssh)
+  #:use-module ((guix licenses)
+                #:renamer (symbol-prefix-proc 'license:))
+  #:use-module (gnu packages compression)
+  #:use-module (gnu packages gnupg)
+  #:use-module (guix packages)
+  #:use-module (guix download)
+  #:use-module (guix build-system gnu))
+
+(define-public libssh2
+  (package
+   (name "libssh2")
+   (version "1.4.3")
+   (source (origin
+            (method url-fetch)
+            (uri (string-append
+                   "http://www.libssh2.org/download/libssh2-"
+                   version ".tar.gz"))
+            (sha256 (base32
+                     "0vdr478dbhbdgnniqmirawjb7mrcxckn4slhhrijxnzrkmgziipa"))))
+   (build-system gnu-build-system)
+   (inputs `(("libgcrypt" ,libgcrypt)
+             ("zlib" ,zlib)))
+   (synopsis "libssh2, a client-side C library implementing the SSH2 protocol")
+   (description
+    "libssh2 is a library intended to allow software developers access to
+the SSH-2 protocol in an easy-to-use self-contained package. It can be built
+into an application to perform many different tasks when communicating with
+a server that supports the SSH-2 protocol.")
+   (license license:bsd-3)
+   (home-page "http://www.libssh2.org/")))