JIT

GH-131238: More refactoring of core header files #2940

Job	Run time
Interpreter (Debug)	9m 10s
Free-Threaded (Debug) (19)	14m 14s
i686-pc-windows-msvc/msvc (Debug)	4m 47s
i686-pc-windows-msvc/msvc (Release)	4m 51s
x86_64-pc-windows-msvc/msvc (Debug)	5m 13s
x86_64-pc-windows-msvc/msvc (Release)	5m 0s
aarch64-pc-windows-msvc/msvc (Debug)	4m 28s
aarch64-pc-windows-msvc/msvc (Release)	3m 40s
x86_64-apple-darwin/clang (Debug)	13m 16s
x86_64-apple-darwin/clang (Release)	8m 12s
aarch64-apple-darwin/clang (Debug)	8m 53s
aarch64-apple-darwin/clang (Release)	8m 18s
x86_64-unknown-linux-gnu/gcc (Debug)	9m 57s
x86_64-unknown-linux-gnu/gcc (Release)	6m 2s
aarch64-unknown-linux-gnu/gcc (Debug)	10m 8s
aarch64-unknown-linux-gnu/gcc (Release)	6m 13s
	2h 2m 22s

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