[compiz] Compiz and list options

[Bellegarde Cedric]

Hello!

Currently, in plugins like "state", when having list options, you have to 
parse all windows on the screen and update their properties... I find this so 
ugly.

In fact, pluginSetScreenOption() give a pointer on the first element of the 
list (CompOptionValue). You don't know what list element has changed !

I think it should be prettier to give a pointer on the first element of the 
list at plugin initialisation but give a pointer on the "just changed" 
element of the list in case of modification.

It will break some plugins ...

Cedric

ps: sorry for my english