CMake

Delay forward MDCT scaling to improve accuracy #790

Job	Run time
CMake/Android/So/ARMv8/Release	33s
CMake/Android/So/X86/Release	20s
CMake/Android/So/X64/Release	15s
CMake MINGW	1m 20s
CMake/Windows/Dll/X86/Release	2m 6s
CMake/Windows/Dll/X64/Release	1m 2s
CMake/Windows/Dll/ARMv8/Release	1m 45s
CMake/Linux/So/X64/Release	27s
Test build with CMake 3.16.0	2m 2s
CMake/MacOSX/So/X64/Release	39s
CMake/MacOSX/Framework/X64/Release	1m 35s
CMake/iOS/Dll/arm64/Release	37s
CMake/iOS/Framework/arm64/Release	33s
CMake/Windows/Lib/X86/Release	2m 46s
CMake/Windows/Lib/X64/Release	2m 20s
CMake/Windows/Lib/armv8/Release	1m 54s
CMake/Linux/Lib/X64/Release	1m 11s
CMake/MacOSX/Lib/X64/Release	1m 26s
CMake/iOS/Lib/arm64/Release	48s
CMake/Android/Lib/ARMv8/Release	32s
CMake/Android/Lib/X86/Release	46s
CMake/Android/Lib/X64/Release	40s
CMake/CustomModes/Linux/Lib/X64/Release	1m 13s
CMake/AssertionsFuzz/Windows/Lib/X64/Release	2m 47s
CMake/AssertionsFuzz/Linux/Lib/X64/Release	1m 17s
CMake/AssertionsFuzz/MacOSX/Lib/X64/Release	1m 25s
	32m 19s

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