Remap Windows targets triples to their LLVM counterparts #9

Job	Run time
Test CUDA support	1m 35s
Rustfmt	13s
Test build-std (aarch64-tvos)	1m 32s
Clippy	17s
MSRV (ubuntu-latest)	23s
Test build-std (aarch64-tvos-sim)	1m 37s
semver-checks	14s
MSRV (windows-latest)	41s
Test build-std (x86_64-tvos)	1m 33s
MSRV (macos-latest)	27s
Test wasm (wasm32-unknown-unknown)	24s
Test (stable)	46s
Test (beta)	27s
Test (nightly)	26s
Test (linux32)	1m 28s
Test (macos)	2m 37s
Test (aarch64-macos)	1m 17s
Test (aarch64-ios)	48s
Test (win32)	1m 56s
Test (win64)	1m 15s
Test (mingw32)	1m 39s
Test (mingw64)	1m 24s
Test (windows-2019)	1m 51s
Test (windows-aarch64, windows-latest, stable, aarch64-pc-windows-msvc, --no-run)	2m 50s
Test (windows-clang, windows-2019, stable, x86_64-pc-windows-msvc, clang, clang++)	2m 14s
Test (windows-clang-cl, windows-2019, stable, x86_64-pc-windows-msvc, clang-cl, clang-cl)	1m 40s
	31m 34s

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