* java/io/PushbackInputStream.java (available): Calculate correct
number of bytes in buffer.
(read): Remove redundant bound check. Return bytes from both the
buffer and the stream.
From-SVN: r51296
* java/io/PushbackInputStream.java (read): If there are characters
in the buffer, don't also call super.read().
* java/io/PushbackReader.java (read): If there are characters in
the buffer, don't also call super.read().
From-SVN: r34745
* All files: Updated copyright information.
* COPYING: New file.
* COPYING.LIB: Removed.
* LIBGCJ_LICENSE: We now use GPL + special exception.
From-SVN: r32387
