[Pkg-lxde-maintainers] Bug#934573: workaround for bug #934573

[Pallinger Péter]

I've found a way to disable this message: in PCManFM in the Edit
menu, choose Preferences, and select "Don't ask options on launch
executable file". 

Whether this should be the default or not is up for debate, but
personally I found the current default annoying, and the setting is not
very easy to find (alas, I found this bug report while searching for
it).