[Bug 47359] DosBox SVN crashes only when launched through Wine

https://bugs.winehq.org/show_bug.cgi?id=47359

--- Comment #16 from Alberto Salvia Novella  ---
I guess the problem comes when telling is C: should be the Wine C:, or the
launched program working directory.

Most likely the solution is:

if the program has been launched by another Windows program:
    C=wineC
    D=currentDir
otherwise raw dosbox

D should always have the current dir, so any exe that needs a CD will work too.