[RFC][plugin]: fix concurrency problems in PAV.java

[Denis Lila]

Hi.

I already replied to this e-mail, but I didn't get it,
so I'm assuming there are others who didn't. The reply
is here:
http://mail.openjdk.java.net/pipermail/distro-pkg-dev/2011-April/013537.html

In it I gave reasons for why I think the attached patch
is the correct way to do things.

Is it good to go?

Thank you,
Denis.

----- Original Message -----
> * Denis Lila <dlila at redhat.com> [2011-04-12 12:21]:
> > Hi.
> >
> > I found a few problems in PluginAppletViewer.java.
> > We were modifying/reading from two static hash maps
> > concurrently. The hash maps were "applets" and "status".
> > status was only modified in a synchronized method,
...