https://bugs.winehq.org/show_bug.cgi?id=13685
--- Comment #22 from hanska2@luukku.com --- If something got broken with wine, then someone should do regression testing between the versions. That means compiling wine with different versions and trying if it works. And if it does the regression test shows what commit broke the thing.
http://wiki.winehq.org/RegressionTesting