Still trying to get people to read it. Even though I wanted to make it
less of a wall of text and more readable, it got bigger. Oops.
While I'm at it, violate my own rules and mix these mostly cosmetic
changes with some actual rule changes and clarifications.
The C11 situation is complicated. For example, MinGW doesn't seem to
have a full C11 implementation, but we pretty much rely on C11 atomics.
Regarding "#pragma once": they say it's not standard because of unsolved
(admittedly valid) issues. Btu still, fuck writing include guards, I
just can't be bothered with this crap.
(Does anyone even read this document?)
Basically, both the license of the file and the preferred license of the
project (LGPLv2.1+) counts. I'm doing that so that files with more
liberal licenses don't get infected by LGPL, but allow copy & pasting to
LGPL source files without jumping through lawyer bullshit hoops.
Mention this in Copyright too.
Not all tools apply line breaking. Which is probably good, because you
wouldn't be able to put lines in there which should _not_ be broken.
Don't ask me whether there is an "official" git convention for this.
Github will display a link to it when a user wants to create an issue or
pull request.
Also make some minor adjustments to DOCS/contribute.md, which is
developer oriented, and for which I see no reason to merge it with
the new file.
As suggested in #2033.
Additionally, change "LGPLv2+" to "LGPLv2.1+". Since this was always
used with the "and later" phrase, this doesn't require any further
discussion.
Also clarify that the "+" means "or later". This should be clear to
anyone with a brain, but you never know with copyright.
