Metal iOS 14.0 Beta 6 to GM API Differences

MTLDevice.h

Added MTLGPUFamilyApple7

Added MTLDevice.barycentricCoordsSupported

Added MTLDevice.supportsShaderBarycentricCoordinates

MTLIntersectionFunctionTable.h

Modified MTLIntersectionFunctionTableDescriptor

	Protocols
From	none
To	NSCopying

MTLSampler.h

Added MTLSamplerAddressModeMirrorClampToEdge

Added MTLSamplerAddressModeClampToBorderColor

Added MTLSamplerBorderColorTransparentBlack

Added MTLSamplerBorderColorOpaqueBlack

Added MTLSamplerBorderColorOpaqueWhite

Added MTLSamplerDescriptor.borderColor

MTLTexture.h

Added MTLTextureType2DMultisampleArray

MTLVisibleFunctionTable.h

Modified MTLVisibleFunctionTableDescriptor

	Protocols
From	none
To	NSCopying