c-scape: add pthread_setname_np (#139)

[HookedBehemoth]

As mentioned in the issue #139, any code using threads fails to link. Since this commit, rust links against a pthread_setname_np on linux. Android is unaffected. rust-lang/rust@013986b

[sunfishcode]

The test failure is just that tests/examples.rs contains a nightly version string that needs to match the CI version.

[sunfishcode]

Otherwise, this PR looks good to me!

[HookedBehemoth]

Ah my bad.
I have some unrelated IP test fail there now

---- ip_properties stdout ----
thread 'ip_properties' panicked at 'assertion failed: !ip!(\"ff01::\").is_global()', tests/net-ip.rs:396:5
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

---- ipv6_properties stdout ----
thread 'ipv6_properties' panicked at 'assertion failed: !ip!(\"ff01::\").is_global()', tests/net-ip.rs:758:5```

[sunfishcode]

That's due to a change on Rust nightly. I happen to have a patch to update the test here: 6011601. In theory, cherry-picking that in should fix it.

[HookedBehemoth]

yep that passes all tests on my end 👍🏻

[sunfishcode]

Thanks!