Define WINEPREFIX if it doesn't exist

[Alexandre Julliard]

"Dmitry Timoshkov" <dmitry at baikal.ru> writes:

> How about the following solution: do not set WINEPREFIX in the startup
> script, just add it to the Wine environment (possibly even not propagating
> it to the Unix environment) in the case it wasn't already set?

I don't think we want to modify the environment unless really
necessary, and IMO it's not necessary in that case.

-- 
Alexandre Julliard
julliard at winehq.com