Update GitHub.TeamFoundation.16 to target .NET 4.7.2

This project needs to compile against assemblies that target .NET 4.7.2.
Because GitHub.VisualStudio targets .NET 4.6, it can no longer compile against GitHub.TeamFoundation.16.
We now include GitHub.TeamFoundation.16.dll as content in GitHub.VisualStudio
and change the MefComponent Asset to use a File rather than Project Source.

Author: jcansdale

src/GitHub.TeamFoundation.16/GitHub.TeamFoundation.16.csproj

@@ -12,7 +12,7 @@
     <RootNamespace>GitHub.TeamFoundation</RootNamespace>
     <AssemblyName>GitHub.TeamFoundation.16</AssemblyName>
     <LangVersion>7.3</LangVersion>
-    <TargetFrameworkVersion>v4.6</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.7.2</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <CodeAnalysisIgnoreGeneratedCode>true</CodeAnalysisIgnoreGeneratedCode>
     <NuGetPackageImportStamp>

src/GitHub.VisualStudio/GitHub.VisualStudio.csproj

@@ -166,6 +166,11 @@
     </EmbeddedResource>
   </ItemGroup>
   <ItemGroup>
+    <Content Include="..\GitHub.TeamFoundation.16\obj\$(Configuration)\GitHub.TeamFoundation.16.dll">
+      <Link>GitHub.TeamFoundation.16.dll</Link>
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+      <IncludeInVSIX>true</IncludeInVSIX>
+    </Content>
     <Content Include="Resources\logo_128x128.png">
       <IncludeInVSIX>true</IncludeInVSIX>
     </Content>
@@ -183,9 +188,6 @@
       <CustomToolNamespace>GitHub.VisualStudio.Settings</CustomToolNamespace>
       <LastGenOutput>PackageSettingsGen.cs</LastGenOutput>
     </Content>
-    <None Include="packages.config">
-      <SubType>Designer</SubType>
-    </None>
     <None Include="..\common\settings.json">
       <Link>Properties\settings.json</Link>
     </None>
@@ -395,12 +397,6 @@
       <IncludeOutputGroupsInVSIX>BuiltProjectOutputGroup;GetCopyToOutputDirectoryItems;DebugSymbolsProjectOutputGroup;</IncludeOutputGroupsInVSIX>
       <IncludeOutputGroupsInVSIXLocalOnly>DebugSymbolsProjectOutputGroup;</IncludeOutputGroupsInVSIXLocalOnly>
     </ProjectReference>
-    <ProjectReference Include="..\GitHub.TeamFoundation.16\GitHub.TeamFoundation.16.csproj">
-      <Project>{F08BD4BC-B5DF-4193-9B01-6D0BBE101BD7}</Project>
-      <Name>GitHub.TeamFoundation.16</Name>
-      <IncludeOutputGroupsInVSIX>BuiltProjectOutputGroup;GetCopyToOutputDirectoryItems;DebugSymbolsProjectOutputGroup;</IncludeOutputGroupsInVSIX>
-      <IncludeOutputGroupsInVSIXLocalOnly>DebugSymbolsProjectOutputGroup;</IncludeOutputGroupsInVSIXLocalOnly>
-    </ProjectReference>
     <ProjectReference Include="..\GitHub.UI.Reactive\GitHub.UI.Reactive.csproj">
       <Project>{158b05e8-fdbc-4d71-b871-c96e28d5adf5}</Project>
       <Name>GitHub.UI.Reactive</Name>

src/GitHub.VisualStudio/source.extension.vsixmanifest

@@ -31,7 +31,7 @@
     <Asset Type="Microsoft.VisualStudio.MefComponent" d:Source="Project" d:ProjectName="GitHub.Services.Vssdk" Path="|GitHub.Services.Vssdk|" />
     <Asset Type="Microsoft.VisualStudio.MefComponent" d:Source="Project" d:ProjectName="GitHub.TeamFoundation.14" TargetVersion="[14.0,15.0)" Path="|GitHub.TeamFoundation.14|" />
     <Asset Type="Microsoft.VisualStudio.MefComponent" d:Source="Project" d:ProjectName="GitHub.TeamFoundation.15" TargetVersion="[15.0,16.0)" Path="|GitHub.TeamFoundation.15|" />
-    <Asset Type="Microsoft.VisualStudio.MefComponent" d:Source="Project" d:ProjectName="GitHub.TeamFoundation.16" TargetVersion="[16.0,17.0)" Path="|GitHub.TeamFoundation.16|" />
+    <Asset Type="Microsoft.VisualStudio.MefComponent" d:Source="File" TargetVersion="[16.0,17.0)" Path="GitHub.TeamFoundation.16.dll" />
     <!-- Sometimes the version of `ServiceHub.VSDetouredHost.exe` is used when installing for Visual Studio 2017, see https://github.com/github/VisualStudio/pull/1875 -->
     <Asset Type="Microsoft.VisualStudio.MefComponent" d:Source="Project" d:ProjectName="GitHub.TeamFoundation.15" TargetVersion="[1.0,2.0)" Path="|GitHub.TeamFoundation.15|" />
     <Asset Type="Microsoft.VisualStudio.VsPackage" d:Source="Project" d:ProjectName="GitHub.InlineReviewsPackage" Path="|GitHub.InlineReviews;PkgdefProjectOutputGroup|" />