Define WINEPREFIX if it doesn't exist

[Dmitry Timoshkov]

"Alexandre Julliard" <julliard at winehq.org> wrote:

> Because WINEPREFIX is not set of course. The solution is not to set it
> unconditionally, but to fix your config and/or wineps to do the right
> thing when WINEPREFIX is not set.

I'm not sure what do you mean by "the right thing" here. Do you mean that
I'm not allowed to use WINEPREFIX in the config, or you mean that every
single dll should have its own ExpandEnvironmentStrings implementation?
Something else?

-- 
Dmitry.