Replace handwritten `Debug` impls with derives

`s_no_extra_traits!` doesn't derive `Debug` so there are a lot of
handwritten implementations. However, since we have a derive-like
solution for unions

Replace handwritten `Debug` impls with derives

`s_no_extra_traits!` doesn't derive `Debug` so there are a lot of
handwritten implementations. However, since we have a derive-like
solution for unions now (printing them like an opaque struct), there
really isn't any reason these can't all be derived.

Add `derive(Debug)` to `s_no_extra_traits`, still gated behind `feature
= "extra_traits"`, which allows getting rid of manual implementations.

(backport <https://github.com/rust-lang/libc/pull/4471>)
(cherry picked from commit 65c39bf1b0c7b904cf512280860120307d17703b)

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Enable libc-test for AIX and fix definitions/declarations.

(backport <https://github.com/rust-lang/libc/pull/4450>)
(cherry picked from commit c192a5cae31dd84ad17dc3c2dd0a3deaacae452a)

chore: lint `libc-test/build.rs`

run `cargo clippy --all-targets` on `libc-test/build.rs`, and fix all default issues.

Notes:

* `copy_dir_hotfix` had a `replace` parameter that was never used

(ba

chore: lint `libc-test/build.rs`

run `cargo clippy --all-targets` on `libc-test/build.rs`, and fix all default issues.

Notes:

* `copy_dir_hotfix` had a `replace` parameter that was never used

(backport <https://github.com/rust-lang/libc/pull/4412>)
[ adjust section heading to avoid ### turning into comment - Trevor ]
(cherry picked from commit 8b15e27a1e06ea9484caa75632de63263a3abb5c)

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Ensure the makedev test does not emit unused errors

(backport <https://github.com/rust-lang/libc/pull/4363>)
(cherry picked from commit a1a956dc078dca102d5651cd933caefa6f3cf483)

Fix test on cygwin

And fill semver file for cygwin.

(backport <https://github.com/rust-lang/libc/pull/4357>)
(cherry picked from commit 5c8804bedbe51db13fff08dcd31c2afc1c0de31c)

cygwin: add support

Co-authored-by: Ookiineko <[email protected]>

(backport <https://github.com/rust-lang/libc/pull/4279>)
(cherry picked from commit f5569b1d574768751de109bf51e08348abc7f7

cygwin: add support

Co-authored-by: Ookiineko <[email protected]>

(backport <https://github.com/rust-lang/libc/pull/4279>)
(cherry picked from commit f5569b1d574768751de109bf51e08348abc7f7d3)

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Change the range syntax that is giving `ctest` problems

`ctest` is iffy about whether or not it accepts `..=` syntax, and I
can't figure out what makes it decide whether or not to accept it and
some

Change the range syntax that is giving `ctest` problems

`ctest` is iffy about whether or not it accepts `..=` syntax, and I
can't figure out what makes it decide whether or not to accept it and
sometimes random changes seem to make things fail, so just replace the
syntax.

This is simpler anyway, and closer matches the upstream definition [1].

Link: https://github.com/torvalds/linux/blob/80e54e84911a923c40d7bee33a34c1b4be148d7a/Makefile#L1316 [1]

(backport <https://github.com/rust-lang/libc/pull/4311>)
(cherry picked from commit 1779f14a0ea8bb663e1e220f006f88284fe5e1b3)

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Make all `major`, `minor`, `makedev` into `const fn`.

(backport <https://github.com/rust-lang/libc/pull/4208>)
(cherry picked from commit 37c3333c07105cf29245941ecbbd5733ad0ddd22)

port style.rs to syn and add tests for the style checker

(backport <https://github.com/rust-lang/libc/pull/4220>)
(cherry picked from commit 56e82108afa1e54a4bb1996251d3d79016a092e0)

Merge pull request #4271 from tgross35/fix-cherry-pick

[0.2] Re-add the test for `primitive_types`