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="3.2"?>
<plugin>
<extension
point="com.nokia.carbide.cdt.builder.environmentModifier">
<modifier class="com.nokia.carbide.cdt.builder.test.TestEnvironmentModifier"/>
</extension>
</plugin>