Bug 55827 [Contributions] Need to remove refs to Platform.getDebugOption from JFace
build I20040323 Standalone JFace applications are currently broken due to several refs to Platform.getDebugOption in JFace, which is only available if Eclipse is running. Should have static flags for the various debug options in JFace, and initialize them from the Workbench.
bundles/org.eclipse.jface/src/org/eclipse/jface/dialogs/Dialog.java
* @param fontMetrics used in performing the conversion
	 * @param dlus the number of horizontal dialog units
	 * @return the number of pixels
	 * @since 2.0
	 */
	public static int convertHorizontalDLUsToPixels(
		FontMetrics fontMetrics,
		int dlus) {
		
		return (
			fontMetrics.getAverageCharWidth() * dlus
				+ HORIZONTAL_DIALOG_UNIT_PER_CHAR / 2)
			/ HORIZONTAL_DIALOG_UNIT_PER_CHAR;
	}
	/**
	 * Returns the number of pixels corresponding to the
	 * given number of vertical dialog units.
	 * <p>
	 * The required <code>FontMetrics</code> parameter may be created in the 
	 * following way:
	 * <code>
	 * 	GC gc = new GC(control);
	 *	gc.setFont(control.getFont());
	 *	fontMetrics = gc.getFontMetrics();
	 *	gc.dispose();
	 * </code>
	 * </p>
	 *
	 * @param fontMetrics used in performing the conversion
	 * @param dlus the number of vertical dialog units