[Wine] Starcraft and Diablo II use a lot of CPU power

[perryh at pluto.rain.com]

> Many older games that are programmed for Windows and DOS use
> busy-wait polling for the input devices, such as the mouse ...
> it is no wine problem, but a design decision of the makers 
> of the program ...

Granted it is primarily caused by the program, but I think Wine
*could* do something to reduce the impact:  before returning
"no input available" from one of these polling (non-blocking)
APIs, sleep for, say, 1/10 of a second.