Updated SDK manager to make sure scan job is not already running before scheduling it; also default OS version to 9.5 if buildinfo.txt is missing from an SDK.
<?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>