Add submodule hash2 #3351

Job	Run time
cmake-install-windows (windows-2019)	9m 54s
b2-posix (ubuntu-20.04)	12m 33s
cmake-install-windows (windows-2022)	8m 48s
b2-windows (windows-2019)	28m 50s
b2-posix (ubuntu-22.04)	12m 43s
cmake-install-posix (ubuntu-20.04)	5m 15s
cmake-install-windows (windows-2025)	9m 38s
b2-windows (windows-2022)	29m 11s
b2-posix (ubuntu-22.04-arm)	15m 30s
cmake-install-posix (ubuntu-22.04)	5m 21s
b2-windows (windows-2025)	30m 34s
b2-posix (ubuntu-24.04)	13m 8s
cmake-install-posix (ubuntu-22.04-arm)	5m 34s
cmake-test-posix (ubuntu-latest)	55m 12s
b2-posix (ubuntu-24.04-arm)	14m 41s
cmake-install-posix (ubuntu-24.04)	4m 45s
b2-posix (macos-13)	25m 21s
cmake-test-posix-quick (ubuntu-20.04)	2m 3s
cmake-install-posix (ubuntu-24.04-arm)	5m 23s
b2-posix (macos-14)	9m 41s
cmake-test-posix-quick (ubuntu-22.04)	3m 14s
cmake-test-windows-quick (windows-2019)	5m 12s
cmake-install-posix (macos-13)	8m 17s
cmake-test-posix-quick (ubuntu-22.04-arm)	2m 20s
cmake-test-windows-quick (windows-2022)	5m 35s
b2-posix (macos-15)	11m 14s
cmake-install-posix (macos-14)	5m 16s
cmake-test-windows-quick (windows-2025)	6m 19s
cmake-test-posix-quick (ubuntu-24.04)	2m 38s
cmake-install-posix (macos-15)	5m 27s
cmake-test-posix-quick (ubuntu-24.04-arm)	2m 27s
cmake-test-posix-quick (macos-13)	5m 0s
cmake-test-posix-quick (macos-14)	3m 58s
cmake-test-posix-quick (macos-15)	3m 52s
	6h 14m 54s

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