nghttp3_map: Port ngtcp2 changes #745

Job	Run time
build-windows (x86)	42s
build (ubuntu-22.04, gcc, autotools)	48s
build-windows (x64)	1m 17s
build-cross (x86_64-w64-mingw32)	2m 18s
build (ubuntu-22.04, gcc, cmake)	44s
build-cross (i686-w64-mingw32)	1m 19s
build (ubuntu-22.04, clang, autotools)	50s
build (ubuntu-22.04, clang, distcheck)	53s
build (ubuntu-22.04, clang, cmake)	50s
build (macos-13, gcc, autotools)	1m 28s
build (macos-13, gcc, cmake)	1m 46s
build (macos-13, clang, autotools)	1m 22s
build (macos-13, clang, distcheck)	1m 28s
build (macos-13, clang, cmake)	1m 25s
build (macos-14, gcc, autotools)	42s
build (macos-14, gcc, cmake)	42s
build (macos-14, clang, autotools)	40s
build (macos-14, clang, distcheck)	56s
build (macos-14, clang, cmake)	51s
release	0s
	21m 1s

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