Bug 63420 [R21PRES] Flash on tab switch
bundles/org.eclipse.ui.presentations.r21/src/org/eclipse/ui/internal/presentations/R21EditorStackPresentation.java
*/
	String getLabelText(IPresentablePart presentablePart, boolean dirtyLeft,
			boolean includePath) {
		String title = presentablePart.getName().trim();
		String text = title;
		if (includePath) {
			String titleTooltip = presentablePart.getTitleToolTip().trim();
			if (titleTooltip.endsWith(title))
				titleTooltip = titleTooltip.substring(0,
						titleTooltip.lastIndexOf(title)).trim();
			if (titleTooltip.endsWith("\\")) 
				titleTooltip = titleTooltip.substring(0,
						titleTooltip.lastIndexOf("\\")).trim(); 
			if (titleTooltip.endsWith("/")) 
				titleTooltip = titleTooltip.substring(0,
						titleTooltip.lastIndexOf("/")).trim(); 
			if (titleTooltip.length() >= 1)
				text += " - " + titleTooltip; 
		}
		if (presentablePart.isDirty()) {
			if (dirtyLeft)
				text = "* " + text; 
			else
				text = text + " *"; 
		}
		return text;
	}
	/**
	 * Returns the image used for the tab item
	 *