sha2

sha2: RISC-V scalar crypto extension support #1178

Job	Run time
riscv32-zknh	16s
riscv64-zknh	1m 49s
minimal-versions / minimal-versions	56s
set-msrv / set-msrv	2s
macos (1.79.0)	28s
linux (i686-unknown-linux-gnu, 1.79.0, sudo apt update && sudo apt install gcc-multilib)	1m 20s
macos (stable)	24s
cross (1.79.0, aarch64-unknown-linux-gnu, default)	41s
linux (i686-unknown-linux-gnu, stable, sudo apt update && sudo apt install gcc-multilib)	1m 25s
build (1.79.0, thumbv7em-none-eabi)	21s
cross (1.79.0, powerpc-unknown-linux-gnu, default)	41s
linux (x86_64-unknown-linux-gnu, 1.79.0)	58s
build (1.79.0, wasm32-unknown-unknown)	24s
windows (1.79.0, x86_64-pc-windows-gnu)	51s
build (1.79.0, loongarch64-unknown-linux-gnu)	19s
cross (stable, aarch64-unknown-linux-gnu, default)	41s
linux (x86_64-unknown-linux-gnu, stable)	1m 18s
windows (stable, x86_64-pc-windows-gnu)	1m 30s
build (stable, thumbv7em-none-eabi)	25s
cross (stable, powerpc-unknown-linux-gnu, default)	53s
build (stable, wasm32-unknown-unknown)	16s
build (stable, loongarch64-unknown-linux-gnu)	19s
	16m 17s

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