PR libgcj/4383

	* gnu/gcj/protocol/file/Connection.java (connect): Throw
	FileNotFoundException if appropriate.
	* gnu/gcj/protocol/file/Handler.java (openConnection): Throw an
	IOException if we got a file: url with a hostname. Comment out protocol
	switch to ftp for now.
	* java/net/URL.java (URL): Include protocol name in exception
	message
	when handler can't be found.

From-SVN: r45898