[rfc][icedtea-web] awt threads cant stop with console enabled

[Jiri Vanek]

After console ressurection, the console window was never disposed, so jvm never terminated without 
system. exit(). This patch is handling it.
Backport to  1.4 should not be necessary as in 1.4 console is shown only for plugin, and 
plugin.terminate is killing jvm quite successfully. However backport is possible if reviewer thinks 
differently.

2013-11-07  Jiri Vanek  <jvanek at redhat.com>

	Fixed deadlock in awt threads. JavaConsole window is no disposed instead of hidden.
	* netx/net/sourceforge/jnlp/util/logging/JavaConsole.java: (lastSize) new
	global variable to remember last size of window.(contentPanel) moved from
	local to global scope. (initializeWindow) extracted from (initialize), is
	handling creation and filling of window. (showConsole) is now initializing
	window, and (hideConsole) is disposing it.
	* netx/net/sourceforge/jnlp/util/logging/OutputController.java: messageQueConsumer
	thread is now named, and its wait, have timeout.
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