Fix bug 11274. Don't hold a lock on projectInfoMap for so long, fetching interesting mmp/bld.inf/etc list outside the lock instead. Add a temporary resource listener just in case resources are modified when we're not looking (I never saw this fire).
<?xml version="1.0" encoding="UTF-8"?>
<classpath>
<classpathentry kind="src" path="src"/>
<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
<classpathentry kind="output" path="bin"/>
</classpath>