00316: Mark bdist_wininst unsupported

We remove the exe files from distutil's bdist_wininst
So we mark the command as unsupported - and the tests are skipped

Author: hroncok

Lib/distutils/command/bdist_wininst.py

@@ -12,6 +12,8 @@
 from distutils import log
 
 class bdist_wininst(Command):
+    # Marker for tests that we have the unsupported bdist_wininst
+    _unsupported = True
 
     description = "create an executable installer for MS Windows"