This removes the busy waiting from the Harness and replaces it with
blocking read() calls using Sockets with specified timeouts.

This is RFC because I'd like it to be tested to see if it speeds things
up as much as Mark's workaround before it is checked in.

--Tony

2006-06-26  Anthony Balkissoon  <abalkiss@redhat.com>

	* Harness.java:
	(bcp_timeout): Removed this field.
	(server): New field.
	(client): New field.
	(runner_watcher): Removed this field.
	(testIsHung): Removed this field.
	(runner_lock): Removed this field.
	(getBootClassPath): Removed the TimeoutWatcher here, just assume this 
	tiny program doesn't hang. Also remove the workaround for busy-waiting.
	(finalize): Close the server socket.
	(initProcess): Setup the server socket and client socket. Set the 
	runner_in and runner_out streams to be from the getInputStream() and 
	getOutputStream() methods for the client socket rather than from the 
	forked process. Removed the references to runner_watcher.
	(runTest): Redesigned to use a blocking readLine() with a specified 
	timeout, rather than polling for input with a separate TimeoutWatcher.
	(TimeoutWatcher): Removed this class.
	* RunnerProcess.java: Replaced all references to System.out with the 
	new PrintWriter "out".  Also:
	(FAILED_TO_LOAD_DESCRIPTION): New field.
	(socket): Likewise.
	(out): Likewise.
	(in): Likewise.
	(main): Setup the Socket-based communications with Harness. Return if 
	testname is null.
	(runtest): Set description at the start to avoid NPE later. If the test
	throws a Throwable when loading set the description to
	FAILED_TO_LOAD_DESCRIPTION and print an error message.