Re: winealsa: improve sound quality for IDsDriverImpl

[Jerry Jenkins]

>
> If the behavior is subject to change, there is no way you can test
> that at configure time. This needs to be a run time check.
>
You're right. So I put some code in configure.ac, try to compile & run it
when configure is executed. If everything is OK, a macro will be defined in
config.h.