Rollup merge of #148362 - Fenex:docs/platform-support-win7, r=Noratrieb

docs: makes a note about possible building  `rustc 1.91.0 + host tools` for win7

I have make notes in docs that there is possible to build host tools for target `x86_64-win7-windows-msvc`.

<img width="668" height="331" alt="image" src="https://github.com/user-attachments/assets/0335bc72-963c-4bfd-9910-61963dbf7dd7" />

r? ``````@roblabla``````

``````@rustbot`````` label A-docs  O-windows-7

P.S. prebuilt binaries can be found [here](https://github.com/Fenex/rust-win7/releases).
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Matthias Krüger 2025-11-02 09:10:39 +01:00 committed by GitHub
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@ -444,7 +444,7 @@ target | std | host | notes
`x86_64-uwp-windows-gnu` | ✓ | |
[`x86_64-uwp-windows-msvc`](platform-support/uwp-windows-msvc.md) | ✓ | |
[`x86_64-win7-windows-gnu`](platform-support/win7-windows-gnu.md) | ✓ | | 64-bit Windows 7 support
[`x86_64-win7-windows-msvc`](platform-support/win7-windows-msvc.md) | ✓ | | 64-bit Windows 7 support
[`x86_64-win7-windows-msvc`](platform-support/win7-windows-msvc.md) | ✓ | | 64-bit Windows 7 support
[`x86_64-wrs-vxworks`](platform-support/vxworks.md) | ✓ | |
[`x86_64h-apple-darwin`](platform-support/x86_64h-apple-darwin.md) | ✓ | ✓ | macOS with late-gen Intel (at least Haswell)
[`xtensa-esp32-espidf`](platform-support/esp-idf.md) | ✓ | | Xtensa ESP32

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@ -16,7 +16,8 @@ Target triples:
This target supports all of core, alloc, std and test. This is automatically
tested every night on private infrastructure hosted by the maintainer. Host
tools may also work, though those are not currently tested.
tools may also work, though it is not guaranteed. Last known success built
version of rustc with host tools (x86_64) is 1.91.0.
Those targets follow Windows calling convention for extern "C".