gnu: Add GNU Plotutils.

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

Makefile.am

@@ -167,6 +167,7 @@ MODULES =					\
   gnu/packages/pdf.scm				\
   gnu/packages/perl.scm				\
   gnu/packages/pkg-config.scm			\
+  gnu/packages/plotutils.scm			\
   gnu/packages/popt.scm				\
   gnu/packages/pth.scm				\
   gnu/packages/python.scm			\

gnu/packages/plotutils.scm

@@ -0,0 +1,54 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2013 Ludovic Courtès <ludo@gnu.org>
+;;;
+;;; 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 plotutils)
+  #:use-module (guix licenses)
+  #:use-module (guix packages)
+  #:use-module (guix download)
+  #:use-module (guix build-system gnu)
+  #:use-module (gnu packages libpng))
+
+(define-public plotutils
+  (package
+    (name "plotutils")
+    (version "2.6")
+    (source (origin
+             (method url-fetch)
+             (uri (string-append "mirror://gnu/plotutils/plotutils-"
+                                 version ".tar.gz"))
+             (sha256
+              (base32
+               "1arkyizn5wbgvbh53aziv3s6lmd3wm9lqzkhxb3hijlp1y124hjg"))))
+    (build-system gnu-build-system)
+    (inputs `(("libpng" ,libpng)))
+    (home-page
+     "http://www.gnu.org/software/plotutils/")
+    (synopsis "Plotting utilities and library")
+    (description
+     "The GNU plotutils package contains software for both programmers and
+technical users.  Its centerpiece is libplot, a powerful C/C++ function
+library for exporting 2-D vector graphics in many file formats, both vector
+and raster.  It can also do vector graphics animations.
+
+libplot is device-independent in the sense that its API (application
+programming interface) does not depend on the type of graphics file to be
+exported.
+
+Besides libplot, the package contains command-line programs for plotting
+scientific data.  Many of them use libplot to export graphics.")
+    (license gpl2+)))