WinUpdater: Check OS and VC++ Redist versions.

Source/Core/WinUpdater/WinUpdater.vcxproj

@@ -24,9 +24,15 @@
       <Project>{D79392F7-06D6-4B4B-A39F-4D587C215D3A}</Project>
     </ProjectReference>
   </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="..\UpdaterCommon\Platform.h" />
+    <ClInclude Include="..\UpdaterCommon\UI.h" />
+    <ClInclude Include="..\UpdaterCommon\UpdaterCommon.h" />
+  </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\UpdaterCommon\UpdaterCommon.cpp" />
     <ClCompile Include="Main.cpp" />
+    <ClCompile Include="Platform.cpp" />
     <ClCompile Include="WinUI.cpp" />
   </ItemGroup>
   <Import Project="$(ExternalsDir)cpp-optparse\exports.props" />