[sldev] Wind Sound CPU usage.

[Jason Giglio]

Callum Lerwick wrote:
> I've only profiled with my OpenAL patch which doesn't yet have noise
> generation. (still haven't got around to looking at what Robin has done,
> have kinda ended up trying to tie up loose ends with OpenJPEG...)

Robin's patch looks a whole lot like the old code, I suspect it won't 
profile much better, but I guess we can't tell for sure until we try it.

If the OpenAL version of wind doesn't profile any better I think we need 
to ask some hard questions about the necessity of this "feature".

-Jason