Update mp11 from develop #2665

Job	Run time
b2-windows (windows-2019)	28m 28s
cmake-install-windows (windows-2019)	8m 34s
b2-windows (windows-2022)	29m 9s
cmake-install-posix (ubuntu-20.04)	5m 14s
b2-posix (ubuntu-20.04)	12m 28s
cmake-install-windows (windows-2022)	8m 54s
cmake-install-posix (ubuntu-22.04)	5m 23s
b2-posix (ubuntu-22.04)	13m 54s
cmake-install-posix (ubuntu-24.04)	5m 21s
cmake-test-posix (ubuntu-latest)	38m 15s
b2-posix (ubuntu-24.04)	13m 38s
cmake-install-posix (macos-13)	13m 55s
cmake-test-posix-quick (ubuntu-20.04)	1m 38s
b2-posix (macos-13)	22m 47s
cmake-install-posix (macos-14)	6m 14s
b2-posix (macos-14)	11m 27s
cmake-test-posix-quick (ubuntu-22.04)	1m 43s
cmake-test-windows-quick (windows-2019)	5m 28s
cmake-install-posix (macos-15)	6m 30s
b2-posix (macos-15)	11m 29s
cmake-test-posix-quick (ubuntu-24.04)	2m 3s
cmake-test-windows-quick (windows-2022)	4m 50s
cmake-test-posix-quick (macos-13)	15m 54s
cmake-test-posix-quick (macos-14)	6m 5s
cmake-test-posix-quick (macos-15)	5m 36s
	4h 44m 57s

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