* java/io/PipedInputStream: Rewrote to be simpler and more correct.
* java/io/PipedOutputStream: Updated to match new PipedInputStream.
* java/io/PipedReader: New implementation based on new
PipedInputStream.
* java/io/PipedWriter: Updated to match new PipedOutputStream.
From-SVN: r38708
* All files: Updated copyright information.
* COPYING: New file.
* COPYING.LIB: Removed.
* LIBGCJ_LICENSE: We now use GPL + special exception.
From-SVN: r32387