Hello,
I made a patch to add a configuration file to be picked up by binfmt to allow to associate windows executables to wine.
As binfmt is now a part of systemd in most linux disttributions: http://www.freedesktop.org/software/systemd/man/systemd-binfmt.service.html
... I don't see a reason why to not include it at the wine level instead of every linux distros, see: https://github.com/xantares/wine/commit/76ebd5d29effaf4b6b39ceecb689f7008bf6...
What do you think ?
x.