gecko-dev/testing/specialpowers/install.rdf

<?xml version="1.0"?>

<RDF xmlns="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
     xmlns:em="http://www.mozilla.org/2004/em-rdf#">

  <Description about="urn:mozilla:install-manifest">
    <em:id>special-powers@mozilla.org</em:id>
    <em:version>2015.11.16</em:version>
    <em:type>2</em:type>
    <em:bootstrap>true</em:bootstrap>

    <!-- Target Application this extension can install into, 
         with minimum and maximum supported versions. -->
    <em:targetApplication>
      <Description>
        <em:id>toolkit@mozilla.org</em:id>
#expand        <em:minVersion>__MOZILLA_VERSION_U__</em:minVersion>
               <!-- Set to * so toolkit/mozapps/update/chrome tests pass. -->
               <em:maxVersion>*</em:maxVersion>
      </Description>
    </em:targetApplication>

    <!-- Front End MetaData -->
    <em:name>Special Powers</em:name>
    <em:description>Special powers for use in testing.</em:description>
    <em:creator>Mozilla</em:creator>
  </Description>      
</RDF>