JIT

gh-138497: Support LLVM_VERSION configuration via env #3964

Job	Run time
Interpreter (Debug)	9m 35s
i686-pc-windows-msvc/msvc (Debug)	19m 55s
aarch64-pc-windows-msvc/msvc (Debug)	22m 11s
x86_64-pc-windows-msvc/msvc (Release)	11m 24s
i686-pc-windows-msvc/msvc (Release)	10m 45s
x86_64-apple-darwin/clang (Debug)	19m 27s
x86_64-apple-darwin/clang (Release)	14m 41s
aarch64-pc-windows-msvc/msvc (Release)	18m 20s
x86_64-pc-windows-msvc/msvc (Debug)	19m 39s
x86_64-unknown-linux-gnu/gcc (Debug)	11m 20s
aarch64-apple-darwin/clang (Release)	11m 45s
aarch64-unknown-linux-gnu/gcc (Release)	5m 46s
aarch64-apple-darwin/clang (Debug)	10m 35s
x86_64-unknown-linux-gnu/gcc (Release)	6m 56s
aarch64-unknown-linux-gnu/gcc (Debug)	8m 18s
	3h 20m 37s

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