JIT

Clean up headers #15

Job	Run time
i686-pc-windows-msvc/msvc (Debug)	2m 27s
i686-pc-windows-msvc/msvc (Release)	3m 8s
x86_64-pc-windows-msvc/msvc (Debug)	2m 21s
x86_64-pc-windows-msvc/msvc (Release)	3m 19s
x86_64-apple-darwin/clang (Debug)	2m 56s
x86_64-apple-darwin/clang (Release)	3m 51s
aarch64-apple-darwin/clang (Debug)	1m 39s
aarch64-apple-darwin/clang (Release)	1m 35s
x86_64-unknown-linux-gnu/gcc (Debug)	1m 9s
x86_64-unknown-linux-gnu/gcc (Release)	1m 59s
x86_64-unknown-linux-gnu/clang (Debug)	1m 31s
x86_64-unknown-linux-gnu/clang (Release)	1m 20s
aarch64-unknown-linux-gnu/gcc (Debug)	3m 2s
aarch64-unknown-linux-gnu/gcc (Release)	3m 59s
aarch64-unknown-linux-gnu/clang (Debug)	3m 35s
aarch64-unknown-linux-gnu/clang (Release)	5m 59s
	43m 50s

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