Bug 220767 [Dialogs] PopupDialog's HOVER_SHELLSTYLE should use SWT.TOOL
3.3.x and 3.4 M5. The SWT.TOOL flag should be used to create hover style shells, hence the PopupDialog's HOVER_SHELLSTYLE should use SWT.TOOL.
bundles/org.eclipse.jface/src/org/eclipse/jface/dialogs/PopupDialog.java
*            the composite used to parent the contents.
	 * 
	 * @return the control representing the contents.
	 */
	protected Control createContents(Composite parent) {
		Composite composite = new Composite(parent, SWT.NONE);
		POPUP_LAYOUT_FACTORY.applyTo(composite);
		LAYOUTDATA_GRAB_BOTH.applyTo(composite);
		
		if (hasTitleArea()) {
			createTitleMenuArea(composite);
			titleSeparator = createHorizontalSeparator(composite);
		}
		
		dialogArea = createDialogArea(composite);
		
		
		if (dialogArea.getLayoutData() == null) {
			LAYOUTDATA_GRAB_BOTH.applyTo(dialogArea);
		}
		
		if (hasInfoArea()) {
			infoSeparator = createHorizontalSeparator(composite);
			createInfoTextArea(composite);
		}
		applyColors(composite);
		applyFonts(composite);
		return composite;
	}
	/**