When scanning system drives for installed SDKs, default SDK version to 5.0 when no SDK version info is available; also updated SDK properties dialog to correctly display SDK version string.

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.0"?>

<!--
 <copyright>
 </copyright>

 $Id: plugin.xml,v 1.1 2009/02/05 00:31:08 wpaul Exp $
-->

<plugin>
</plugin>