Add "fips-compat" feature #933

Job	Run time
clippy	8m 6s
clippy	8m 6s
rustfmt	6s
rustfmt	6s
Cross build from macOS to Linux (x86_64-unknown-linux-gnu)	1m 52s
Cross build from macOS to Linux (x86_64-unknown-linux-gnu)	1m 52s
Cross build from macOS to Linux (FIPS) (x86_64-unknown-linux-gnu)	2m 35s
Cross build from macOS to Linux (FIPS) (x86_64-unknown-linux-gnu)	2m 37s
Test (stable)	1m 59s
Test (stable)	1m 59s
Test features	7m 46s
Test features	7m 46s
Test (arm-android)	2m 1s
Test (arm-android)	2m 1s
Test FIPS integration	2m 43s
Test FIPS integration	2m 43s
Test (arm64-android)	2m 13s
Test (arm64-android)	2m 13s
Test (i686-android)	2m 14s
Test (i686-android)	2m 14s
Test (x86_64-android)	1m 59s
Test (x86_64-android)	1m 59s
Test (aarch64-ios)	2m 34s
Test (aarch64-ios)	2m 34s
Test (aarch64-ios-sim)	2m 14s
Test (aarch64-ios-sim)	2m 14s
Test (x86_64-ios)	2m 15s
Test (x86_64-ios)	2m 15s
Test (i686-linux)	2m 34s
Test (i686-linux)	2m 34s
Test (arm-linux)	2m 22s
Test (arm-linux)	2m 22s
Test (aarch64-linux)	2m 19s
Test (aarch64-linux)	2m 19s
Test (arm64-macos)	2m 38s
Test (arm64-macos)	2m 38s
Test (x86_64-macos)	2m 33s
Test (x86_64-macos)	2m 33s
Test (x86_64-mingw)	6m 16s
Test (x86_64-mingw)	6m 16s
Test (i686-msvc)	8m 52s
Test (i686-msvc)	8m 52s
Test (x86_64-msvc)	5m 58s
Test (x86_64-msvc)	5m 58s
	2h 28m 20s

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