Patch: add ActionEvent and TextEvent handling to TextComponent peers

[Thomas Fitzsimmons]

Hello,

This patch adds functionality to GtkTextComponentPeer and
GtkTextFieldPeer so that TextField objects may react to ActionEvents and
TextComponents to TextEvents.

KeyEvent generation still needs more work, but it can be done as a
separate patch.

Please review/comment.

Thanks,
Tom

	* gnu/java/awt/peer/gtk/GtkTextComponentPeer.java
	(setCaretPosition, setEditable): Rely entirely on native
	implementation.
	(getArgs): Remove.
	(postTextEvent): New method.
	(handleEvent): New method.
	* gnu/java/awt/peer/gtk/GtkTextFieldPeer.java (handleEvent): New
	method.
	* java/awt/event/ActionEvent.java (paramString): Fix formatting.
	* jni/gtk-peer/gnu_java_awt_peer_gtk_GtkEvents.c
	(keysym_to_awt_keycode): Fix range checks.
	(generates_key_typed_event): New function.
	(awt_event_handler): Post AWT_KEY_RELEASED events to event
	queue.
	* jni/gtk-peer/gnu_java_awt_peer_gtk_GtkMainThread.c
	(gtkInit): Store TextComponent's postTextEvent method ID.
	* jni/gtk-peer/gnu_java_awt_peer_gtk_GtkTextComponentPeer.c
	(setText): Post TEXT_VALUE_CHANGED event to event queue.

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