Issue #27309: Enables proper Windows styles in python[w].exe manifest.

Misc/NEWS

@@ -123,6 +123,11 @@ Tools/Demos
 
 - Issue #27418: Fixed Tools/importbench/importbench.py.
 
+Windows
+-------
+
+- Issue #27309: Enabled proper Windows styles in python[w].exe manifest.
+
 
 What's New in Python 3.5.2?
 ===========================

PC/python.manifest

@@ -16,4 +16,10 @@
       <supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}"/>
     </application> 
   </compatibility>
+  <dependency>
+    <dependentAssembly>
+      <assemblyIdentity type="win32" name="Microsoft.Windows.Common-Controls"
+                        version="6.0.0.0" processorArchitecture="*" publicKeyToken="6595b64144ccf1df" language="*" />
+    </dependentAssembly>
+  </dependency>
 </assembly>
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