Added eightfold. #1959

Job	Run time
linux-x86_64-debug	13m 50s
linux (aarch64)	7m 5s
linux (armhf)	7m 6s
linux (i686)	6m 46s
linux (riscv64)	7m 3s
macos	1h 23m 57s
linux (x86_64)	6m 53s
lto	21m 10s
headless	16m 21s
modaudio (modduo, modduo-static, MODDUO=true)	31m 52s
source-tarball	13m 10s
modaudio (modduox, modduox-static)	32m 40s
sysdeps	16m 22s
modaudio (moddwarf, moddwarf)	32m 57s
wasm (simd)	1h 0m 39s
windows (win32)	9m 55s
wasm (nosimd)	1h 1m 39s
plugin-validation	20m 29s
windows (win64)	10m 17s
	7h 40m 11s

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