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
private Font infoFont;
	/**
	 * Font to be used for the title area text. Computed based on the dialog's
	 * font.
	 */
	private Font titleFont;
	/**
	 * Flags indicating whether we are listening for shell deactivate events,
	 * either those or our parent's. Used to prevent closure when a menu command
	 * is chosen or a secondary popup is launched.
	 */
	private boolean listenToDeactivate;
	private boolean listenToParentDeactivate;
	private Listener parentDeactivateListener;
	/**
	 * Flag indicating whether focus should be taken when the dialog is opened.
	 */
	private boolean takeFocusOnOpen = false;
	/**
	 * Flag specifying whether a menu should be shown that allows the user to
	 * move and resize.
	 */
	private boolean showDialogMenu = false;
	/**
	 * Flag specifying whether menu actions allowing the user to choose whether
	 * the dialog bounds and location should be persisted are to be shown.
	 */
	private boolean showPersistActions = false;
	/**
	 * Flag specifying whether the size of the popup should be persisted. This