Because we cannot yet bring a more recent musl to the mips and mipsel
architectures, we disable support for these constant until a cascading
update with rust-lang/rust has been done.

This reverts commit 1a1b170a.

This reverts commit 7b171fb1.

Both are linux-specific additions, and supported since kernel version
4.17 and 4.15, respectively.

Revert PR 1322

Reverts PR #1322 .

cc https://github.com/rust-lang/rust/pull/60117

Deprecate _pad field on siginfo_t

As discussed in https://github.com/rust-lang/libc/pull/1316

Fix getgrgid_r to accept gid_t.

Closes #1320.

Bump to 0.2.53

This adds more WASI support, and in particular adds support for WASI
being a target_os rather than a target_env, which relates to this PR:

https://github.com/rust-lang/rust/pull/60117

This adds more WASI support, and in particular adds support for WASI
being a target_os rather than a target_env, which relates to this PR:

https://github.com/rust-lang/rust/pull/60117

Add more WASI libc bindings

This picks up #1321, adding more WASI libc bindings, adding several more fixes. In particular, `cargo test --all` including libc-test now builds successfully.

fd_set isn't automatically copyable. While it will be possible to fix
that, for now just remove these so that they don't block other changes.

This contains several fixes, including the FD_ISSET signature change
that the previous patch in this PR needs.

dirent contains a flexible array member, so don't test its sizeof, don't
allow it to be copied, and don't represent it with an artificial size.

Also, locale_t is a typedef for a pointer to an opaque struct, so
represent it that way explicitly.

Rustc is changing it to be target_os; for now, recognize both.

Bump to 0.2.52

This will allow the crt-static feature to be utilized correctly on Redox, #1322

This fixes issue #1318 - on Solarish systems __posix_readdir_r is only

defined for 32-bit Solarish targets.  Since rust doesn't currently support 32-bit Solarish targets, the line is both unnecessary and wrong.

As found with the latest fd binary, removing the line fixed the fd build (and fd then works as expected).

redox: support crt-static

This reuses the code from musl to add support to Redox for crt-static.

Linking to `m` is also unnecessary as it is included in `c`