Added gnuplot 4.6.3

<?xml version="1.0"?>
<interface xmlns="http://zero-install.sourceforge.net/2004/injector/interface" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://zero-install.sourceforge.net/2004/injector/interface http://0install.de/schema/injector/interface/interface.xsd http://0install.de/schema/desktop-integration/capabilities http://0install.de/schema/desktop-integration/capabilities/capabilities.xsd">
  <name>gnuplot</name>
  <summary xml:lang="en">famous scientific plotting package</summary>
  <summary xml:lang="de">berühmtes wissenschaftliches Plotting-Paket</summary>
  <description xml:lang="en">Gnuplot is a portable command-line driven graphing utility.</description>
  <description xml:lang="de">Gnuplot ist ein portierbares Befehlszeilen-getriebes Graph-Tool.</description>
  <homepage>http://gnuplot.sourceforge.net/</homepage>
  <icon href="http://0install.de/feeds/images/gnuplot.png" type="image/png"/>
  <icon href="http://0install.de/feeds/images/gnuplot.ico" type="image/vnd.microsoft.icon"/>
  <category>Graphics</category>
  <category>Utility</category>
  <feed-for interface="http://0install.de/feeds/gnuplot.xml"/>
  <group license="GPL v2 (GNU General Public License)">
    <command name="run" path="bin/wgnuplot.exe"/>
    <command name="cli" path="bin/gnuplot.exe"/>
    <implementation arch="Windows-*" id="sha1new=ddc371583072e2a35978f28a9636a61a055bfad9" released="2013-04-18" stability="stable" version="4.6.3">
      <manifest-digest sha256new="2UDQAII5HNFQ772DW777ME4Y2WKIW2TYV36KZZ7RPU6MBBZCELKQ"/>
      <archive extract="gnuplot" href="http://downloads.sourceforge.net/gnuplot/gp463-win32.zip" size="12939069" type="application/zip"/>
    </implementation>
  </group>
</interface>