[compiz] Place plugin

[Kristian Lyngstol]

I thought we removed place, or was that something that was agreed but never
executed?

The plugin has been virtually untouched since wall and expo got popular,
and I don't really want to support it for 0.8.

Unless someone has any strong objections, it'll be removed later this
evening. I'm sorry about the short notice, but I'm fairly sure this has
been briefly discussed before between David, Danny and Dennis. 

- Kristian