Add "fips-compat" feature (#286) #934

Job	Run time
Test FIPS integration	3m 5s
rustfmt	18s
clippy	8m 21s
Cross build from macOS to Linux (x86_64-unknown-linux-gnu)	2m 20s
Cross build from macOS to Linux (FIPS) (x86_64-unknown-linux-gnu)	4m 52s
Test features	7m 20s
Test (stable)	2m 8s
Test (arm-android)	2m 28s
Test (arm64-android)	2m 14s
Test (i686-android)	2m 4s
Test (x86_64-android)	2m 0s
Test (aarch64-ios)	2m 22s
Test (aarch64-ios-sim)	3m 13s
Test (x86_64-ios)	2m 43s
Test (i686-linux)	2m 27s
Test (arm-linux)	2m 22s
Test (aarch64-linux)	2m 22s
Test (arm64-macos)	2m 40s
Test (x86_64-macos)	2m 24s
Test (x86_64-mingw)	5m 38s
Test (i686-msvc)	6m 21s
Test (x86_64-msvc)	4m 43s
	1h 14m 25s

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