Windows: Use a shared precompiled header for dolphin code under Source/

Source/Core/Core/Core.vcxproj

@@ -31,7 +31,7 @@
   <ImportGroup Label="PropertySheets">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
     <Import Project="..\..\VSProps\Base.props" />
-    <Import Project="..\..\VSProps\PrecompiledHeader.props" />
+    <Import Project="..\..\VSProps\PCHUse.props" />
   </ImportGroup>
   <PropertyGroup Label="UserMacros" />
   <ItemGroup>
@@ -231,9 +231,6 @@
     <ClCompile Include="PowerPC\Profiler.cpp" />
     <ClCompile Include="PowerPC\SignatureDB.cpp" />
     <ClCompile Include="State.cpp" />
-    <ClCompile Include="stdafx.cpp">
-      <PrecompiledHeader>Create</PrecompiledHeader>
-    </ClCompile>
     <ClCompile Include="VolumeHandler.cpp" />
     <ClCompile Include="x64MemTools.cpp" />
   </ItemGroup>
@@ -412,7 +409,6 @@
     <ClInclude Include="PowerPC\Profiler.h" />
     <ClInclude Include="PowerPC\SignatureDB.h" />
     <ClInclude Include="State.h" />
-    <ClInclude Include="stdafx.h" />
     <ClInclude Include="VolumeHandler.h" />
   </ItemGroup>
   <ItemGroup>