Dynamically allocate path name buffer for Unicode
path name in listdir. Fixes #1431582.
Stop overallocating MAX_PATH characters for ANSI
path names. Stop assigning to errno.
diff --git a/Misc/NEWS b/Misc/NEWS
index bc0f379..a7269af 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -72,6 +72,9 @@
Extension Modules
-----------------
+- On Win32, os.listdir now supports arbitrarily-long Unicode path names
+ (up to the system limit of 32K characters).
+
- Use Win32 API to implement os.{access,chdir,chmod,mkdir,remove,rename,rmdir,utime}.
As a result, these functions now raise WindowsError instead of OSError.