Bug 177183 [Dialogs] PopupDialog should show the view menu on mouseDown
I20070306-1200 PopupDialog should show the view menu on mouseDown. Trivial fix follows.
bundles/org.eclipse.jface/src/org/eclipse/jface/dialogs/PopupDialog.java
* Shell style appropriate for a resizable info popup that can get focus.
	 */
	public final static int INFOPOPUPRESIZE_SHELLSTYLE = SWT.RESIZE;
	/**
	 * Margin width (in pixels) to be used in layouts inside popup dialogs
	 * (value is 0).
	 */
	public final static int POPUP_MARGINWIDTH = 0;
	/**
	 * Margin height (in pixels) to be used in layouts inside popup dialogs
	 * (value is 0).
	 */
	public final static int POPUP_MARGINHEIGHT = 0;
	/**
	 * Vertical spacing (in pixels) between cells in the layouts inside popup
	 * dialogs (value is 1).  
	 */
	public final static int POPUP_VERTICALSPACING = 1;
	/**
	 * Vertical spacing (in pixels) between cells in the layouts inside popup
	 * dialogs (value is 1).
	 */
	public final static int POPUP_HORIZONTALSPACING = 1;
	/**
	 * 
	 */
	private static final GridLayoutFactory POPUP_LAYOUT_FACTORY = GridLayoutFactory
			.fillDefaults().margins(POPUP_MARGINWIDTH, POPUP_MARGINHEIGHT)
			.spacing(POPUP_HORIZONTALSPACING, POPUP_VERTICALSPACING);