* gnu/java/nio/FileLockImpl.java
	(static): Removed, not needed anymore.
	* gnu/java/nio/channels/FileChannelImpl.java
	(FileChannelImpl): Made final.
	(mode): Made private.
	(READ, WRITE, APPEND): Made public.
	(EXCL, SYNC, DSYNC): Likewise.
	(static): Load native JNI library, when needed.
	(length): Unused, removed.
	(available): Made public.
	(implPosition): Throws IOException.
	(seek): Likewise.
	(implTruncate): Likewise.
	(unlock): Likewise.
	(lock): Likewise.

From-SVN: r80891