Temporary workaround for ILLink failure on Windows.

Author: crummel

repos/corefx.proj

@@ -16,6 +16,7 @@
     <BuildArguments>$(BuildArguments) -PackageRid=$(OverrideTargetRid)</BuildArguments>
     <BuildArguments>$(BuildArguments) --</BuildArguments>
     <BuildArguments>$(BuildArguments) /p:BuildAllPackages=true</BuildArguments>
+    <BuildArguments Condition="'$(TargetOS)' == 'Windows_NT'">$(BuildArguments) /p:ILLinkTrimAssembly=false</BuildArguments>
     <BuildArguments>$(BuildArguments) /bl</BuildArguments>
 
     <BuildCommand>$(ProjectDirectory)/build$(ShellExtension) $(BuildArguments)</BuildCommand>