Add sock_extended_err and associated constants from errqueue.h to linux_like

This is an alternate version of #1614 that attempts to fix issues with the android ctests by rearranging the headers.  Due to long CI cycle time, I've opened it as an alternate PR.  Only one or the other should merge, depending if linux_like or linux is the correct place for this.

sock_extended_err is a struct returned as a control message when the sockopt
IP_RECVERR is set, when recvmsg has the MSG_ERRQUEUE flag set. IP_RECVERR and
MSG_ERRQUEUE are constants both already defined here.

Update bindings for the wasm32-wasi target

This commit performs a number of updates for libc with the `wasm32-wasi`
target:

* Updates the `wasi-libc` repository commit used (previously known as
  `wasi-sysroot`)
* Updates the container to Ubuntu 19.10 which has Clang 9 packaged which
  is all we need.
* Avoids building `wasmtime` and instead downloads a precompiled binary.
* Updates bindings in `src/wasi.rs` to match the current upstream state.

Modelled after the cmsg tests, this wraps the C macro into a function, and then
compares the results to the Rust implementation in libc.

sock_extended_err is a struct returned as a control message when the sockopt
IP_RECVERR is set, when recvmsg has the MSG_ERRQUEUE flag set.  IP_RECVERR and
MSG_ERRQUEUE are constants both already defined here.

This moves the linux/ headers after others
This keeps the Android tests closer to the Linux ones.
I think this is needed to get linux/errqueue.h to not cause compilation
failures.

Implement utmp for NetBSD

Followed this: https://github.com/NetBSD/src/blob/trunk/include/utmp.h

use *const pointer for NetBSD's pthread_setname_np

Add ucred and socket related types to uclibc-mips32

Fix compilation of the [tokio](https://github.com/tokio-rs) rust for MIPS architecture when using uClibc. Added missed types, which are defined in library headers:
https://github.com/kraj/uClibc/blob/ca1c74d67dd115d059a875150e10b8560a9c35a8/libc/sysdeps/linux/common/bits/socket.h#L320
https://github.com/kraj/uClibc/blob/ca1c74d67dd115d059a875150e10b8560a9c35a8/libc/sysdeps/linux/common/bits/in.h#L35-L36
https://github.com/kraj/uClibc/blob/ca1c74d67dd115d059a875150e10b8560a9c35a8/libc/sysdeps/linux/common/bits/in.h#L140-L143

Should also solve https://github.com/rust-lang-nursery/net2-rs/issues/88

Revisit of #1500

Implement utmpx.h itens for NetBSD

This PR partially closes #1534

If add the constants, structs and and extra traid implmentation

Add support for shared memory operations for solaris/illumos

This is needed because Firefox now uses slice-deque rust crate.

expose futimens() for illumos systems

illumos has an implementation of `futimens()` which we should expose.  I'm working on a broader set of [fixes for illumos](https://github.com/rust-lang/libc/compare/master...jclulow:illumos_fixes) in general, but that's going to take a lot more work to be ready so the test suite doesn't currently seem to function.

Support for RISC-V 64-bit GNU/Linux

Add support for RISC-V 64-bit GNU/Linux.

Follow up to rust-lang/rust#66661.

r? @alexcrichton

Implement utmp for solarish targets

I followed these references:

https://github.com/illumos/illumos-gate/blob/4e0c5eff9af325c80994e9527b7cb8b3a1ffd1d4/usr/src/head/utmpx.h
https://github.com/illumos/illumos-gate/blob/4e0c5eff9af325c80994e9527b7cb8b3a1ffd1d4/usr/src/head/utmp.h

Add initial support for sparc-unknown-linux-gnu

While the Rust compiler already supports the sparc-unknown-linux-gnu target, the libc crate is missing support for it. Let's add it so that Rust can built for this target as well.

adds IPV6_ consts for linux

- add ssm struct and setsockopt constants

Signed-off-by: patrick felt <patrick.felt@sling.com>

Add flock64 to linux_like platforms

Hi,
I'm not sure about what to make of the ifdef in glibc `__USE_LARGEFILE64` that covers it.
but I copied the impl from glibc's headers.
everything is the same except for sparc which has a reserved short int.
and in musl it's just `#define flock64 flock`

Co-Authored-By: gnzlbg <gnzlbg@users.noreply.github.com>

This reverts commit 6ff2e8f1.

Provide SYS_statx for more target_arch/target_env

Fixes #1545

The syscall `statx` is provided by Linux Kernel, so it should be available on any `target_env`/`target_arch`, not only some arch on `gnu`.

Syscall ids are got from [this commit of musl](http://git.etalabs.net/cgit/musl/commit/?id=9864f60e929100e253fc813bd4105d6dd7652787), except for hexagon, which is got from Linux Kernel (`make O=build ARCH=hexagon headers`).

**Not tested yet**