Get rid of a couple of copies of the CC0 text. Add header comment to
CC0 files to remind people editing them what the terms are. Also add
some missing XML headers. The header comments in layouts won't bloat
the binary - they get stripped out before compressing, same as any other
comments.
This effectively reverts b380514764 and
c24473ddff, restoring the state at
598cd52272.
Before pushing, please check that what you're about to push is sane.
Check your local commit log and ensure there isn't anything out-of-place
before pushing to mainline. When things like this happen, it wastes
everyone's time. I really don't need this in a week when real work™ is
busting my balls and I'm behind where I want to be with preparing for
MAME release.
Keymaps must have been broken for ages:
- It is now possible to map every scancode SDL2 defines.
- Removed keycode field. This was a leftover from SDL1.x
- Fixed bug preventing keymaps from working.
- Fixed the DE keymap.
- Converted other keymaps to new format and added a
comment that they have to be reviewed and fixed.
