RAR message indicating {RawFileName} is confusing

From an issue filed via VS feedback at https://developercommunity.visualstudio.com/content/problem/30724/build-output-rawfilename-value-not-provided.html:

> In detailed build output, when it shows where a reference is found for a given DLL, it says it's found at path location "{RawFileName}". As in, that exact string literal, rather than substituting whatever the RawFileName variable is supposed to be.
>
> Examples can be seen in pretty much every attempt to resolve a reference location, but the raw text of one instance would be:
>
> ```
> 3> Primary reference "System.Console, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a".
> 3> Resolved file path is "C:\Users\\.nuget\packages\system.console\4.3.0\ref\netstandard1.3\System.Console.dll".
> 3> Reference found at search path location "{RawFileName}".
> 3> Found related file "C:\Users\\.nuget\packages\system.console\4.3.0\ref\netstandard1.3\System.Console.xml".
> 3> This reference is not "CopyLocal" because at least one source item had "Private" set to "false" and no source items had "Private" set to "true".
> 3> The ImageRuntimeVersion for this reference is "v4.0.30319".
> ```