strip all trailing spaces

[stsp]

No description provided.

[PerditionC]

I don't have any objections, but if there is going to be a big change to files for white space only reasons, perhaps [choosing &] running a source formatting utility once as a big change and then prior to future commits would be worth considering. Or maybe not.

[stsp]

indent with some options, I suppose.
But running the format utility will provide
times bigger patch! That's why I never
dared to do so in dosemu2: it will trouble
the git blame a bit, although it has -w
option to deal with that.
Let me know if you want me to do so
(telling also what indent options you need),
but I'd rather do that in a separate patch
anyway.