JIT

gh-138497: Support LLVM_VERSION configuration via env #3973

Job	Run time
Interpreter (Debug)	10m 12s
i686-pc-windows-msvc/msvc (Debug)	23m 16s
aarch64-pc-windows-msvc/msvc (Debug)	23m 32s
i686-pc-windows-msvc/msvc (Release)	14m 42s
x86_64-pc-windows-msvc/msvc (Release)	14m 25s
x86_64-unknown-linux-gnu/gcc (Debug)	11m 24s
x86_64-pc-windows-msvc/msvc (Debug)	23m 1s
x86_64-apple-darwin/clang (Debug)	18m 43s
aarch64-apple-darwin/clang (Debug)	12m 56s
x86_64-unknown-linux-gnu/gcc (Release)	7m 45s
aarch64-apple-darwin/clang (Release)	11m 5s
aarch64-pc-windows-msvc/msvc (Release)	17m 20s
x86_64-apple-darwin/clang (Release)	16m 22s
aarch64-unknown-linux-gnu/gcc (Debug)	7m 11s
aarch64-unknown-linux-gnu/gcc (Release)	5m 38s
	3h 37m 32s

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