Assining .bat and .com files with the desktop

[Vincent Povirk]

I'm not sure DOSBox is able to competently open some random executable
file. One would have to make a config file that sets up a drive
mapping, runs the file, and quits. If Wine can do these things (and
maybe also properly handle cases where the COM executable expects to
be run on a windows machine or, say, a dos machine with win3.1
installed), it seems like a fine choice to me.

There's a non-zero chance that wine start /unix will actually start
cmd and make a terminal for BAT files. It makes one for console
executables. If it doesn't, there's a possibility that start.exe will
do that on Windows, in which case that is a Wine bug that we should
fix. You should test that before making a new thing.

There was some talk on #mono (or #monodev) to the effect that the
arbitration mechanism for different kinds of files is called mime
types, and a DOS exe, x86/x64 PE exe, and CLR exe are all different
and should have different mime types.