Binskim is reporting BA2018 for trimmed netcoreapp assemblies

[jkotas]

Moved from microsoft/binskim#1021

ILLink should set NoSeh bit when it strips R2R payload

runtime/src/tools/illink/src/linker/Linker.Steps/OutputStep.cs

Lines 99 to 103 in 3c6dfd7

	{
	module.Attributes |= ModuleAttributes.ILOnly;
	module.Attributes ^= ModuleAttributes.ILLibrary;
	module.Architecture = TargetArchitecture.I386; // I386+ILOnly which ultimately translates to AnyCPU
	}

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