Bring in cpufeatures v0.2.9 #2

Job	Run time
aarch64 (aarch64-unknown-linux-gnu, 1.59.0)	3m 26s
aarch64 (aarch64-unknown-linux-gnu, stable)	48s
build (1.56.0, armv7a-none-eabi)	3m 27s
cross (powerpc-unknown-linux-gnu, 1.56.0)	4m 2s
build (1.56.0, thumbv7em-none-eabi)	3m 12s
cross (powerpc-unknown-linux-gnu, stable)	43s
build (1.56.0, wasm32-unknown-unknown)	2m 48s
build (stable, armv7a-none-eabi)	7s
test (i686-unknown-linux-gnu, ubuntu-latest, 1.56.0, sudo apt update && sudo apt install gcc-mult...	3m 25s
test (i686-unknown-linux-gnu, ubuntu-latest, stable, sudo apt update && sudo apt install gcc-mult...	53s
build (stable, thumbv7em-none-eabi)	17s
test (x86_64-unknown-linux-gnu, ubuntu-latest, 1.56.0)	2m 58s
build (stable, wasm32-unknown-unknown)	11s
test (x86_64-unknown-linux-gnu, ubuntu-latest, stable)	17s
test (x86_64-apple-darwin, macos-latest, 1.56.0)	4m 23s
test (x86_64-apple-darwin, macos-latest, stable)	42s
test (x86_64-pc-windows-msvc, windows-latest, 1.56.0)	2m 44s
test (x86_64-pc-windows-msvc, windows-latest, stable)	1m 34s
minimal-versions / minimal-versions	1m 3s
	37m 0s

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