gh-117139: Add header for tagged pointers (GH-118330) #76

Job	Run time
i686-pc-windows-msvc/msvc (Debug)	17m 52s
i686-pc-windows-msvc/msvc (Release)	22m 57s
x86_64-pc-windows-msvc/msvc (Debug)	17m 59s
x86_64-pc-windows-msvc/msvc (Release)	22m 25s
aarch64-pc-windows-msvc/msvc (Debug)	5m 8s
aarch64-pc-windows-msvc/msvc (Release)	6m 3s
x86_64-apple-darwin/clang (Debug)	13m 39s
x86_64-apple-darwin/clang (Release)	16m 56s
aarch64-apple-darwin/clang (Debug)	8m 46s
aarch64-apple-darwin/clang (Release)	12m 26s
x86_64-unknown-linux-gnu/gcc (Debug)	7m 53s
x86_64-unknown-linux-gnu/gcc (Release)	8m 36s
x86_64-unknown-linux-gnu/clang (Debug)	7m 54s
x86_64-unknown-linux-gnu/clang (Release)	8m 34s
aarch64-unknown-linux-gnu/gcc (Debug)	1h 10m 48s
aarch64-unknown-linux-gnu/gcc (Release)	46m 5s
aarch64-unknown-linux-gnu/clang (Debug)	1h 3m 55s
aarch64-unknown-linux-gnu/clang (Release)	40m 18s
	6h 38m 14s

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