* java/awt/MenuItem.java (paramString): Now protected.

	* java/awt/MenuShortcut.java: Implements Serializable.

	* java/awt/MenuBar.java: Rewrote from scratch.

	* java/awt/MenuComponent.java (removeNotify): Wrote.
	Implements Serializable.

	* java/awt/GridBagConstraints.java (GridBagConstraints): New
	constructor.

	* java/awt/CheckboxMenuItem.java: Wrote.

From-SVN: r38488