Rollup merge of rust-lang#126450 - madsmtm:promote-mac-catalyst, r=Mark-Simulacrum

Promote Mac Catalyst targets to Tier 2, and ship with rustup

Promote the Mac Catalyst targets `x86_64-apple-ios-macabi` and `aarch64-apple-ios-macabi` to Tier 2.

Draft until [the MCP](rust-lang/compiler-team#761) finishes (see that for motivation).

````@rustbot```` author
r? ````@ghost````

Author: matthiaskrgr

src/ci/github-actions/jobs.yml

@@ -285,7 +285,7 @@ auto:
 
   - image: dist-apple-various
     env:
-      SCRIPT: ./x.py dist bootstrap --include-default-paths --host='' --target=aarch64-apple-ios,x86_64-apple-ios,aarch64-apple-ios-sim
+      SCRIPT: ./x.py dist bootstrap --include-default-paths --host='' --target=aarch64-apple-ios,x86_64-apple-ios,aarch64-apple-ios-sim,aarch64-apple-ios-macabi,x86_64-apple-ios-macabi
       RUST_CONFIGURE_ARGS: --enable-sanitizers --enable-profiler --set rust.jemalloc
       RUSTC_RETRY_LINKER_ON_SEGFAULT: 1
       MACOSX_DEPLOYMENT_TARGET: 10.12

src/doc/rustc/src/platform-support.md

@@ -135,6 +135,7 @@ so Rustup may install the documentation for a similar tier 1 target instead.
 target | std | notes
 -------|:---:|-------
 [`aarch64-apple-ios`](platform-support/apple-ios.md) | ✓ | ARM64 iOS
+[`aarch64-apple-ios-macabi`](platform-support/apple-ios-macabi.md) | ✓ | Mac Catalyst on ARM64
 [`aarch64-apple-ios-sim`](platform-support/apple-ios.md) | ✓ | Apple iOS Simulator on ARM64
 `aarch64-fuchsia` | ✓ | Alias for `aarch64-unknown-fuchsia`
 [`aarch64-unknown-fuchsia`](platform-support/fuchsia.md) | ✓ | ARM64 Fuchsia
@@ -195,6 +196,7 @@ target | std | notes
 [`wasm32-wasip1`](platform-support/wasm32-wasip1.md) | ✓ | WebAssembly with WASI
 [`wasm32-wasip1-threads`](platform-support/wasm32-wasip1-threads.md) | ✓ | WebAssembly with WASI Preview 1 and threads
 [`x86_64-apple-ios`](platform-support/apple-ios.md) | ✓ | 64-bit x86 iOS
+[`x86_64-apple-ios-macabi`](platform-support/apple-ios-macabi.md) | ✓ | Mac Catalyst on x86_64
 [`x86_64-fortanix-unknown-sgx`](platform-support/x86_64-fortanix-unknown-sgx.md) | ✓ | [Fortanix ABI] for 64-bit Intel SGX
 `x86_64-fuchsia` | ✓ | Alias for `x86_64-unknown-fuchsia`
 [`x86_64-unknown-fuchsia`](platform-support/fuchsia.md) | ✓ | 64-bit x86 Fuchsia
@@ -244,7 +246,6 @@ target | std | host | notes
 -------|:---:|:----:|-------
 [`arm64e-apple-ios`](platform-support/arm64e-apple-ios.md) | ✓ | | ARM64e Apple iOS
 [`arm64e-apple-darwin`](platform-support/arm64e-apple-darwin.md)  | ✓ | ✓ | ARM64e Apple Darwin
-[`aarch64-apple-ios-macabi`](platform-support/apple-ios-macabi.md) | ✓ |  | Apple Catalyst on ARM64
 [`aarch64-apple-tvos`](platform-support/apple-tvos.md) | ✓ |  | ARM64 tvOS
 [`aarch64-apple-tvos-sim`](platform-support/apple-tvos.md) | ✓ |  | ARM64 tvOS Simulator
 [`aarch64-apple-watchos`](platform-support/apple-watchos.md) | ✓ |  | ARM64 Apple WatchOS
@@ -370,7 +371,6 @@ target | std | host | notes
 `thumbv7neon-unknown-linux-musleabihf` | ? |  | Thumb2-mode Armv7-A Linux with NEON, musl 1.2.3
 [`wasm32-wasip2`](platform-support/wasm32-wasip2.md) | ✓ |  | WebAssembly
 [`wasm64-unknown-unknown`](platform-support/wasm64-unknown-unknown.md) | ? |  | WebAssembly
-[`x86_64-apple-ios-macabi`](platform-support/apple-ios-macabi.md) | ✓ |  | Apple Catalyst on x86_64
 [`x86_64-apple-tvos`](platform-support/apple-tvos.md) | ✓ |  | x86 64-bit tvOS
 [`x86_64-apple-watchos-sim`](platform-support/apple-watchos.md) | ✓ |  | x86 64-bit Apple WatchOS simulator
 [`x86_64-pc-nto-qnx710`](platform-support/nto-qnx.md) | ✓ |  | x86 64-bit QNX Neutrino 7.1 RTOS |

src/doc/rustc/src/platform-support/apple-ios-macabi.md

@@ -2,7 +2,7 @@
 
 Apple Mac Catalyst targets.
 
-**Tier: 3**
+**Tier: 2 (without Host Tools)**
 
 - `aarch64-apple-ios-macabi`: Mac Catalyst on ARM64.
 - `x86_64-apple-ios-macabi`: Mac Catalyst on 64-bit x86.

src/tools/build-manifest/src/main.rs

@@ -54,6 +54,7 @@ static TARGETS: &[&str] = &[
     "arm64e-apple-darwin",
     "aarch64-apple-ios",
     "arm64e-apple-ios",
+    "aarch64-apple-ios-macabi",
     "aarch64-apple-ios-sim",
     "aarch64-unknown-fuchsia",
     "aarch64-linux-android",
@@ -160,6 +161,7 @@ static TARGETS: &[&str] = &[
     "wasm32-wasip2",
     "x86_64-apple-darwin",
     "x86_64-apple-ios",
+    "x86_64-apple-ios-macabi",
     "x86_64-fortanix-unknown-sgx",
     "x86_64-unknown-fuchsia",
     "x86_64-linux-android",