Merge pull request #156 from boostorg/prepare_for_first_boost_release #394

Job	Run time
B2 msvc-14.2	7m 42s
CMake gcc-11 17 Debug	12m 14s
B2 msvc-14.3	7m 40s
CMake gcc-11 20 Release	10m 43s
CMake clang-11 17 Debug	5m 7s
CMake msvc-14.2 Debug C++17	8m 34s
CMake clang-11 20 Debug	9m 9s
CMake msvc-14.2 Release C++17	9m 19s
CMake clang-13 17 Release	7m 12s
CMake msvc-14.3 Debug C++20	9m 55s
CMake clang-13 20 Release	7m 30s
CMake msvc-14.3 Release C++20	10m 25s
CMake clang-14 17 Debug -stdlib=libc++	10m 26s
CMake clang-14 20 Release -stdlib=libc++	10m 29s
B2 gcc-11	4m 27s
B2 clang-14	4m 21s
	2h 15m 13s

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