Bug 202474 [Forms] Create a resource manager to share the bold font
If a FormToolkit is passed into FormEditor it is disposed upon disposal of the editor even though it may be shared.
bundles/org.eclipse.ui.forms/src/org/eclipse/ui/internal/forms/widgets/FormUtil.java
}
	public static int computeMaximumWidth(Control c, boolean changed) {
		if (c instanceof Composite) {
			Layout layout = ((Composite) c).getLayout();
			if (layout instanceof ILayoutExtension)
				return ((ILayoutExtension) layout).computeMaximumWidth(
						(Composite) c, changed);
		}
		return c.computeSize(SWT.DEFAULT, SWT.DEFAULT, changed).x;
	}
	public static Form getForm(Control c) {
		Composite parent = c.getParent();
		while (parent != null) {
			if (parent instanceof Form) {
				return (Form) parent;
			}
			parent = parent.getParent();
		}
		return null;
	}
	public static Image createAlphaMashImage(Device device, Image srcImage) {
		Rectangle bounds = srcImage.getBounds();
		int alpha = 0;
		int calpha = 0;
		ImageData data = srcImage.getImageData();
		
		
		
		
		for (int i = 0; i < bounds.height; i++) {