Update vendored windows libs

libs/win/bugs/environ-api-wierdness.py

@@ -0,0 +1,39 @@
+import ctypes
+from jaraco.windows import environ
+import os
+
+getenv = ctypes.cdll.msvcrt.getenv
+getenv.restype = ctypes.c_char_p
+putenv = ctypes.cdll.msvcrt._putenv
+
+
+def do_putenv(*pair):
+    return putenv("=".join(pair))
+
+
+def print_environment_variable(key):
+    for method in (os.environ.get, os.getenv, environ.GetEnvironmentVariable, getenv):
+        try:
+            print(repr(method(key)))
+        except Exception as e:
+            print(e, end=' ')
+    print
+
+
+def do_test():
+    key = 'TEST_PYTHON_ENVIRONMENT'
+    print_environment_variable(key)
+    methods = (
+        os.environ.__setitem__,
+        os.putenv,
+        environ.SetEnvironmentVariable,
+        do_putenv,
+    )
+    for i, method in enumerate(methods):
+        print('round', i)
+        method(key, 'value when using method %d' % i)
+        print_environment_variable(key)
+
+
+if __name__ == '__main__':
+    do_test()