WIP thread refcount #153

Job	Run time
Interpreter (Debug)	6m 57s
Free-Threaded (Debug)	1m 36s
i686-pc-windows-msvc/msvc (Debug)	18m 15s
i686-pc-windows-msvc/msvc (Release)	20m 59s
x86_64-pc-windows-msvc/msvc (Debug)	16m 37s
x86_64-pc-windows-msvc/msvc (Release)	20m 23s
aarch64-pc-windows-msvc/msvc (Debug)	4m 53s
aarch64-pc-windows-msvc/msvc (Release)	6m 14s
x86_64-apple-darwin/clang (Debug)	14m 57s
x86_64-apple-darwin/clang (Release)	20m 20s
aarch64-apple-darwin/clang (Debug)	9m 11s
aarch64-apple-darwin/clang (Release)	18m 10s
x86_64-unknown-linux-gnu/gcc (Debug)	7m 33s
x86_64-unknown-linux-gnu/gcc (Release)	17m 32s
x86_64-unknown-linux-gnu/clang (Debug)	7m 37s
x86_64-unknown-linux-gnu/clang (Release)	13m 58s
aarch64-unknown-linux-gnu/gcc (Debug)	1h 13m 26s
aarch64-unknown-linux-gnu/gcc (Release)	36m 12s
aarch64-unknown-linux-gnu/clang (Debug)	1h 13m 2s
aarch64-unknown-linux-gnu/clang (Release)	39m 23s
	7h 7m 15s

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