Saturate de-emphasis so we can increase SIG_SAT #661

Job	Run time
CMake/Android/So/ARMv8/Release	41s
CMake/Android/So/X86/Release	21s
CMake MINGW	1m 3s
CMake/Android/So/X64/Release	28s
CMake/Windows/Dll/X86/Release	1m 4s
CMake/Windows/Dll/X64/Release	1m 49s
Test build with CMake 3.16.0	1m 10s
CMake/Windows/Dll/ARMv8/Release	1m 42s
CMake/Linux/So/X64/Release	36s
CMake/MacOSX/So/X64/Release	33s
CMake/MacOSX/Framework/X64/Release	1m 28s
CMake/iOS/Dll/arm64/Release	37s
CMake/iOS/Framework/arm64/Release	36s
CMake/Windows/Lib/X86/Release	2m 3s
CMake/Windows/Lib/X64/Release	1m 41s
CMake/Windows/Lib/armv8/Release	53s
CMake/Linux/Lib/X64/Release	1m 13s
CMake/MacOSX/Lib/X64/Release	1m 18s
CMake/iOS/Lib/arm64/Release	41s
CMake/Android/Lib/ARMv8/Release	1m 9s
CMake/Android/Lib/X86/Release	24s
CMake/Android/Lib/X64/Release	31s
CMake/CustomModes/Linux/Lib/X64/Release	1m 5s
CMake/AssertionsFuzz/Windows/Lib/X64/Release	2m 21s
CMake/AssertionsFuzz/Linux/Lib/X64/Release	1m 22s
CMake/AssertionsFuzz/MacOSX/Lib/X64/Release	1m 25s
	28m 14s

Provide feedback