Fix problem of not checking if current perspective equals target perspective before prompting to switch perspectives. Also, check if project is Qt Nature and skip if it's a bld.inf import.

<?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>