new panel and old plugins

[Jasper Huijsmans]

Olivier Fourdan wrote:
> Hi
> 
> It's ok to break the 4.0 -> 4.2 binary compat (ppl will have to
> recompile the plugins, but that 's no big deal)
> 

Done ;-)

Note to everyone using CVS: you have to update all mcs plugins (most 
Xfce modules); also recompile your panel plugins, unless you recompiled 
them after RC1.

	Jasper