* java/nio/channels/spi/AbstractSelectableChannel.java
	(registered): Made private.
	(blocking): Likewise.
	(LOCK): Likewise.
	(provider): Likewise.
	(keys): Made it a private LinkedList.
	(AbstractSelectableChannel): Initialize keys.
	(isRegistered): New implementation.
	(locate): Rewritten.
	(register): Rewritten.
	* java/nio/channels/spi/AbstractSelectionKey.java
	(ok): Removed.
	(cancelled): New member variable.
	(cancel): Rewritten.
	(isValid): Rewritten.
	* java/nio/channels/spi/AbstractSelector.java:
	Some methods moved.
	(closed): Make private.
	(provider): Likewise.
	(cancelledKeys): New member variable.
	(AbstractSelector): Initialize cancelledKeys.
	(cancelKey): New method.

From-SVN: r72275