clang-include-cleaner has a hard time figuring out unused includes
with all the macro string concatentation we're doing in test_table().
Let's help it out a little by also passing the enum type into test_table().
While technically not needed, this makes the tests a bit more self-descriptive
and not really much more verbose so it feels like a good chance regardless,
even if the primary purpose is to help clang-include-cleaner figure out
used and unused includes.
This part of the copyright blurb stems from the GPL use recommendations:
https://www.gnu.org/licenses/gpl-howto.en.html
The concept appears to originate in times where version control was per
file, instead of per tree, and was a way to glue the files together.
Ultimately, we nowadays don't live in that world anymore, and this
information is entirely useless anyway, as people are very welcome to
copy these files into any projects they like, and they shouldn't have to
change bits that are part of our copyright header for that.
hence, let's just get rid of this old cruft, and shorten our codebase a
bit.
Files which are installed as-is (any .service and other unit files, .conf
files, .policy files, etc), are left as is. My assumption is that SPDX
identifiers are not yet that well known, so it's better to retain the
extended header to avoid any doubt.
I also kept any copyright lines. We can probably remove them, but it'd nice to
obtain explicit acks from all involved authors before doing that.
Daan De Meyer
Yu Watanabe
Zbigniew Jędrzejewski-Szmek
Lennart Poettering