Update vendored windows libs

libs/win/scripts/watch-changes.py

@@ -0,0 +1,35 @@
+import traceback
+import sys
+import logging
+
+from jaraco.windows.filesystem import change
+
+logging.basicConfig(level=logging.INFO)
+
+
+def long_handler(file):
+    try:
+        with open(file, 'rb') as f:
+            data = f.read()
+        print("read", len(data), "bytes from", file)
+    except Exception:
+        traceback.print_exc()
+
+
+def main():
+    try:
+        watch()
+    except KeyboardInterrupt:
+        pass
+
+
+def watch():
+    notifier = change.BlockingNotifier(sys.argv[1])
+    notifier.watch_subtree = True
+
+    for ch in notifier.get_changed_files():
+        long_handler(ch)
+
+
+if __name__ == '__main__':
+    main()