Fix bug 12139: don't launch multiple 'save indexer cache' jobs at once. Also, just in case, always ignore .cproject as a resource that can trigger rebuilding configuration data.
<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.2"?>
<plugin>
<extension-point id="featureUseTracker" name="Feature Usage Tracker" schema="schema/featureUseTracker.exsd"/>
</plugin>