FileChannelImpl.java: Moved to package gnu/java/nio/channels, since we need to refer to it from java.io.


	* java/nio/channels/FileChannelImpl.java:  Moved to package
	gnu/java/nio/channels, since we need to refer to it from java.io.
	* java/nio/channels/natFileChannelImpl.cc:  Removed file.

	* Makefile.am, configure.in:  Updated accordingly.

From-SVN: r78660