Bug 66426 No tooltip for Junit view when docked as Fastview [JUnit]
Using RC1, the tooltip appears as the empty string for the JUnit launch view.
org.eclipse.jdt.junit/src/org/eclipse/jdt/internal/junit/ui/TestRunnerViewPart.java
if (hasErrorsOrFailures())
			postError(msg);
		else
			setInfoMessage(msg);
			
		postSyncRunnable(new Runnable() {				
			public void run() {
				if(isDisposed()) 
					return;	
				fStopAction.setEnabled(lastLaunchIsKeptAlive());
				if (fFailures.size() > 0) {
					selectFirstFailure();
				}
				updateViewIcon();
				if (fDirtyListener == null) {
					fDirtyListener= new DirtyListener();
					JavaCore.addElementChangedListener(fDirtyListener);
				}
				for (Enumeration e= fTestRunTabs.elements(); e.hasMoreElements();) {
					TestRunTab v= (TestRunTab) e.nextElement();
					v.aboutToEnd();
				}
			}
		});	
		stopUpdateJob();
	}
	private void stopUpdateJob() {
		if (fUpdateJob != null) {
			fUpdateJob.stop();
			fUpdateJob= null;