Switch to explicit locks and condition queues in PluginAppletViewer

2010-04-14  Andrew John Hughes  <[email protected]>

	* plugin/icedteanp/java/sun/applet/PluginAppletViewer.java,
	(PluginAppletPanelFactory.createPanel(PluginStreamHandler,
	int,long,int,int,URL,Hashtable)): Remove duplication of wait
	for panel.isAlive().
	(PluginAppletViewer.panelLock): New lock used to track panel
	creation.
	(PluginAppletViewer.panelLive): Condition queue for panel creation.
	(PluginAppletViewer.appletsLock): New lock used to track additions
	to the applets map.
	(PluginAppletViewer.appletAdded): Condition queue for applet addition.
	(PluginAppletViewer.statusLock): New lock for status changes.
	(PluginAppletViewer.initComplete): Condition queue for initialisation
	completion.
	(PluginAppletViewer.framePanel(int,long,NetxPanel)):
	Replace synchronized block with use of appletsLock and notification
	on appletAdded condition queue.
	(AppletEventListener.appletStateChanged(AppletEvent)): Signal the
	panelLive condition queue that the panel is live.
	(PluginAppletViewer.handleMessage(int,int,String)): Wait on appletAdded
	condition queue for applet to be added to the applets map.
	(PluginAppletViewer.updateStatus(Int,PAV_INIT_STATUS)): Signal when a
	status change occurs using the initComplete condition queue.
	(PluginAppletViewer.waitForAppletInit(NetxPanel)): Wait on the panelLive
	condition queue until the panel is created.
	(PluginAppletViewer.handleMessage(int,String)): Wait on the initComplete
	condition queue until initialisation is complete.  Wait on the panelLive
	signal until panel is created.
	(waitTillTimeout(ReentrantLock,Condition,long)): Convert to use
	ReentrantLock and Condition.  Add assertion to check the lock is held.
	Avoid conversion between milliseconds and nanoseconds.

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