add illumos support

[jclulow]

Previously, illumos systems used the "x86_64-sun-solaris" host triple.
Now that we're getting an "x86_64-unknown-illumos" triple, we need to
add new target_os conditionals for illumos.

With this change I'd like to get a new version, 0.2.34, published to crates.io so that we can start using it in other repositories. Thanks for taking a look!

[jclulow]

For what it's worth, though the CI environment appears to be having difficulty, the tests do pass on an Ubuntu system:

$ cargo test
    Updating crates.io index
   Compiling libc v0.2.69
   Compiling cfg-if v0.1.10
   Compiling net2 v0.2.33 (/var/tmp/net2-rs)
    Finished test [unoptimized + debuginfo] target(s) in 2.96s
     Running target/debug/deps/net2-4f33690d22f7d589

running 0 tests

test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out

     Running target/debug/deps/all-2fc00eaa4aab24f2

running 2 tests
test smoke_build_listener_v6 ... ok
test smoke_build_listener ... ok

test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out

   Doc-tests net2

running 1 test
test src/lib.rs -  (line 27) ... ok

test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out

[jclulow]

Hi @alexcrichton! Sorry to bug you, but I'd really appreciate it if you could take a look at this one. I recognise maintenance on this crate appears to have slowed, but it's still in use in a number of important and popular libraries for right now. If I can help with maintenance or whatever, please let me know! Thanks.

[alexcrichton]

Sorry but I don't maintain this crate any more.

[jclulow]

Sorry but I don't maintain this crate any more.

Fair enough! Do you know who does? I don't see much information about how projects in the "rust-lang-nursery" organisation are intended to work.

If you're looking to pass maintenance on, I'd be happy to create a new GitHub organisation and take it over with @pfmooney. We'd really like to get a release of this out -- it's used in a number of very active other crates!

Thanks.

[pfmooney]

Addressed in 24f41cb