* gnu/java/nio/PipeImpl.java
	(SourceChannelImpl): New inner class.
	(SinkChannelImpl): New inner class.
	(sink): New member variable.
	(source): New member variable.
	(PipeImpl): Add SelectorProvider argument, implemented.
	(nativeInit): New method.
	(sink): Return sink channel.
	(source): Return source channel.
	* gnu/java/nio/SelectorProviderImpl.java
	(openPipe): Give provider as argument to PipeImpl constructor.
	* java/nio/channels/spi/SelectorProvider.java
	(pr): Removed.
	(systemDefaultProvider): New member variable.
	(provider): Made it synchronized, use property
	java.nio.channels.spi.SelectorProvider.
	* gnu/java/nio/natPipeImpl.cc: New file.
	* Makefile.am (nat_source_files): Added gnu/java/nio/natPipeImpl.cc.
	* Makefile.in: Regenerated.

From-SVN: r72397