zlib-1.3.1 #180

Job	Run time
ci (tpb, ubuntu-22.04, --pb --threads --enable-libffi, test-some-fast)	28m 48s
ci (a6osx, macos-12)	22m 22s
ci (ta6osx, macos-12)	23m 6s
ci (i3le, ubuntu-22.04)	11m 25s
ci (ti3le, ubuntu-22.04)	14m 27s
ci (a6le, ubuntu-22.04)	8m 59s
ci (ta6le, ubuntu-22.04, CFLAGS+=-std=gnu89)	11m 51s
ci (ta6le, ubuntu-22.04, reboot, -m=ta6le --force, re.boot SCHEME="chezscheme", test-some-fast)	8m 21s
ci (i3nt, windows-2022, vs)	11m 40s
ci (ti3nt, windows-2022, vs)	14m 58s
ci (a6nt, windows-2022, vs)	12m 2s
ci (ta6nt, windows-2022, vs)	15m 43s
ci (ta6nt, windows-2022, gcc, CFLAGS+=-std=gnu89)	13m 54s
	3h 17m 36s

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