winealsa: improve sound quality for IDsDriverImpl

[Jerry Jenkins]

> Well I for one am a bit confused. The reason it needs to be a runtime
> check is so we can compile Wine on one machine then run it on a totally
> different one, and Wine figures out what it can and cannot do on the
> fly. If we are altering its behaviour according to the capabilities of
> the compiling machine then this is very bad indeed.
>
I knew. I also want it can be compiled once and run on any other machines.
My point is that only the best code should go into the wine, and the test
code I have written is not so¡­ :-(. It will give someone many troubles if
he wants to do something about the performance.

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