I'm sorry wildly, but that might upset you to pack all files in one package?
<install for="2.0 RC2, 2.0 RC3">
<readme type="file" parsebbc="true">readme.txt</readme>
<modification type="file">GoogAd.xml</modification>
<modification type="file">languages.xml</modification>
<modification type="file">russian-utf8.xml</modification>
<modification type="file">russian.xml</modification>
</install>
<uninstall for="2.0 RC2, 2.0 RC3">
<modification type="file" reverse="true">GoogAd.xml</modification>
<modification type="file" reverse="true">languages.xml</modification>
<modification type="file" reverse="true">russian-utf8.xml</modification>
<modification type="file" reverse="true">russian.xml</modification>
</uninstall>