lang/rust: Update to 1.57.0

[tobik]

Summary

Scheduled to be released on 2021-12-02.

https://internals.rust-lang.org/t/rust-1-57-0-prerelease-testing/15690

https://github.com/rust-lang/rust/blob/master/RELEASES.md#version-1570-2021-12-02

• Reenable hardlinks in the build like rust-nightly after d5f09dc31fcfdb77b69c86b9093bf67ec67653d9
• Unbreak build with LibreSSL 3.4.x

Patch contents also on GitHub: https://github.com/freebsd/freebsd-ports/compare/main...t6:tobik/rust-1.57.0.patch

Test Plan

Poudriere 13.0 amd64 ok
Poudriere 13.0 powerpc ok
Poudriere 13.0 powerpc64 ok
Poudriere 13.0 powerpc64le ok
Poudriere 12.2 i386 ok

ref13-aarch64 ok
ref12-ppc64 ok

Exp-run: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=260140

[2khramtsov_gmail.com]

To avoid regressing D32654 maybe also apply files/patch-vendor_cc_src_lib.rs to the versioned vendor/cc-1.0.69/src/lib.rs.

[tobik]

• lang/rust: Apply cc crate patch to additional cc-1.0.69 crate too

[tobik]

In D33190#750726, @evgeniy_khramtsov.org wrote:

To avoid regressing D32654 maybe also apply files/patch-vendor_cc_src_lib.rs to the versioned vendor/cc-1.0.69/src/lib.rs.

Ok, sure. Maybe fix devel/llvm13 too by backporting https://reviews.llvm.org/D77776.

[tobik]

@mikael Should we disable the backtrace libunwind backend for armv* like in https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259799#c40 or do we leave it on?

[mikael]

In D33190#751745, @tobik wrote:

@mikael Should we disable the backtrace libunwind backend for armv* like in https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259799#c40 or do we leave it on?

Disable the backtrace libunwind backend please.