Use rust constants and rust types in bindgen

[CGMossa]

In continuing the effort to clean-up and smooth out libR-sys, I have found that clippy complains about these constants, and we can replace c-types with rust types by this setting.

This will need to be checked more thoroughly with extendr though.

[CGMossa]

This is also blocked by #157

• [PoC] Test against the generated bindings #157

[CGMossa]

/bindings

[yutannihilation]

Thanks for catching. I think we can just block them. Are there any good reason to re-export these constants that are already available via std?

[CGMossa]

Maybe extendr uses the rust name?
This yields documentation through the rust version atleast.

[yutannihilation]

Maybe extendr uses the rust name?

I quickly searched M_ in the extendr's repository, but nothing is found. So, I think it's fine to remove.

[CGMossa]

That's even better. I'll make adjustments.

[CGMossa]

I've removed them.

[CGMossa]

We could consider .blocklist_item("^M_.*") just to clean up.

[yutannihilation]

Looks good!