sys-info v0.5.10 broken on windows

[ry]

https://github.com/denoland/deno/pull/4270/checks?check_run_id=490557406

error[E0425]: cannot find function `sysconf` in crate `libc`
##[error]   --> C:\Users\runneradmin\.cargo\registry\src\git.luolix.top-1ecc6299db9ec823\sys-info-0.5.10\lib.rs:396:34
    |
396 |             let buf_size = libc::sysconf(libc::_SC_HOST_NAME_MAX) as usize;
    |                                  ^^^^^^^ not found in `libc`

error[E0425]: cannot find value `_SC_HOST_NAME_MAX` in crate `libc`
##[error]   --> C:\Users\runneradmin\.cargo\registry\src\git.luolix.top-1ecc6299db9ec823\sys-info-0.5.10\lib.rs:396:48
    |
396 |             let buf_size = libc::sysconf(libc::_SC_HOST_NAME_MAX) as usize;
    |                                                ^^^^^^^^^^^^^^^^^ not found in `libc`

error[E0425]: cannot find function `gethostname` in crate `libc`
##[error]   --> C:\Users\runneradmin\.cargo\registry\src\git.luolix.top-1ecc6299db9ec823\sys-info-0.5.10\lib.rs:398:22
    |
398 |             if libc::gethostname(buf.as_mut_ptr() as *mut libc::c_char, buf_size) < 0 {
    |                      ^^^^^^^^^^^ help: a function with a similar name exists: `getsockname`

It seems v0.5.9 was also broken #42

[meithecatte]

This is fixed already on master. @FillZpp maybe it's time for another release?

[FillZpp]

Hi @NieDzejkob @ry, sys-info v0.6.0 has been released. Please check if it is fiexed.

[ry]

No, it is still broken on windows: https://github.com/denoland/deno/pull/4495/checks?check_run_id=536592299

I would suggest you have add windows CI.

[jclulow]

I've taken a swing at a complete fix for this in #55, and have tested in myself in a Windows 10 VM.