Fix #16176. Properly identify Windows 8 via platform.platform()

Add handling of the 6.2 release line, aka Windows 8 and Windows 2012 Server.
diff --git a/Lib/platform.py b/Lib/platform.py
index eedc11c..686a045 100755
--- a/Lib/platform.py
+++ b/Lib/platform.py
@@ -668,8 +668,13 @@
                     release = '7'
                 else:
                     release = '2008ServerR2'
+            elif min == 2:
+                if product_type == VER_NT_WORKSTATION:
+                    release = '8'
+                else:
+                    release = '2012Server'
             else:
-                release = 'post2008Server'
+                release = 'post2012Server'
 
     else:
         if not release:
diff --git a/Misc/NEWS b/Misc/NEWS
index 9e1e96b..e1356ad 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -129,6 +129,8 @@
 Library
 -------
 
+- Issue #16176: Properly identify Windows 8 via platform.platform()
+
 - Issue #16114: The subprocess module no longer provides a misleading
   error message stating that args[0] did not exist when either the cwd or
   executable keyword arguments specified a path that did not exist.