Install the Reference Assemblies before Managed project compiles

(cherry picked from commit ca6b60f)

Author: yerudakoms

scripts/BuildProjFS-Managed.bat

@@ -45,6 +45,7 @@ call "%VsDir%\VC\Auxiliary\Build\vcvarsall.bat" x86_amd64
 
 :: Restore all dependencies and run the build.
 pushd "%PROJFS_SRCDIR%"
+%nuget% install Microsoft.NETFramework.ReferenceAssemblies.net461  -Version 1.0.2 -OutputDirectory %PROJFS_PACKAGESDIR%
 msbuild /t:Restore ProjectedFSLib.Managed.sln
 msbuild ProjectedFSLib.Managed.sln /p:ProjFSManagedVersion=%ProjFSManagedVersion% /p:Configuration=%SolutionConfiguration% /p:Platform=x64 || exit /b 1
 popd