message: Update project files for Windows build
diff: <ProjectName>Irrlicht</ProjectName>
  <ProjectGuid>{E08E042A-6C45-411B-92BE-3CC31331019F}</ProjectGuid>
  <RootNamespace>Irrlicht</RootNamespace>
  - <WindowsTargetPlatformVersion>10.0.16299.0</WindowsTargetPlatformVersion>
  + <WindowsTargetPlatformVersion>10.0.15063.0</WindowsTargetPlatformVersion>
  </PropertyGroup>
  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='SDL-Debug|Win32'" Label="Configuration">
  <ClInclude Include="COSOperator.h" />
  <ClInclude Include="CSceneManager.h" />
  <ClInclude Include="CSkinnedMeshSceneNode.h" />
  + <ClInclude Include="FW_Mutex.h" />
  <ClInclude Include="Octree.h" />
  <ClInclude Include="CSMFMeshFileLoader.h" />
  <ClInclude Include="C3DSMeshFileLoader.h" />
  <None Include="..\..\readme.txt" />
  </ItemGroup>
  <ItemGroup>
  + <ClCompile Include="blobsLoading.cpp" />
  + <ClCompile Include="CBAWFile.cpp" />
  + <ClCompile Include="CBAWMeshFileLoader.cpp" />
  + <ClCompile Include="CBAWMeshWriter.cpp" />
  + <ClCompile Include="CBlobsLoadingManager.cpp" />
  <ClCompile Include="CDefaultSceneNodeAnimatorFactory.cpp" />
  <ClCompile Include="CDefaultSceneNodeFactory.cpp" />
  <ClCompile Include="CGeometryCreator.cpp" />
  <ClCompile Include="CTRTextureGouraudAddNoZ2.cpp" />
  <ClCompile Include="CTRTextureGouraudNoZ2.cpp" />
  <ClCompile Include="CTRTextureGouraudVertexAlpha2.cpp" />
  + <ClCompile Include="FW_Mutex.cpp" />
  <ClCompile Include="IBurningShader.cpp" />
  <ClCompile Include="CLogger.cpp" />
  <ClCompile Include="Irrlicht.cpp" />
  