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
}
	/**
	 * Return the default background color used for popup dialogs.
	 * 
	 * @return the default background color
	 */
	private Color getDefaultBackground() {
		return getShell().getDisplay()
				.getSystemColor(SWT.COLOR_INFO_BACKGROUND);
	}
	/**
	 * Apply any desired fonts to the specified composite and its children.
	 * 
	 * @param composite
	 *            the contents composite
	 */
	private void applyFonts(Composite composite) {
		Dialog.applyDialogFont(composite);
	}
	/**
	 * Set the specified foreground color for the specified control and all of
	 * its children, except for those specified in the list of exclusions.
	 * 
	 * @param color
	 *            the color to use as the foreground color
	 * @param control
	 *            the control whose color is to be changed
	 * @param exclusions
	 *            a list of controls who are to be excluded from getting their
	 *            color assigned