Demonstrate and fix [ 783882 ] os.lstat crashes with Unicode filename.

Will also check in on the 2.3 branch.

Lib/test/test_unicode_file.py

@@ -25,6 +25,8 @@ f.close()
 # Test stat and chmod
 if os.stat(TESTFN_ENCODED) != os.stat(TESTFN_UNICODE):
     print "os.stat() did not agree on the 2 filenames"
+if os.lstat(TESTFN_ENCODED) != os.lstat(TESTFN_UNICODE):
+    print "os.lstat() did not agree on the 2 filenames"
 os.chmod(TESTFN_ENCODED, 0777)
 os.chmod(TESTFN_UNICODE, 0777)
 

Modules/posixmodule.c

@@ -4607,7 +4607,7 @@ posix_lstat(PyObject *self, PyObject *args)
 	return posix_do_stat(self, args, "et:lstat", lstat, NULL, NULL);
 #else /* !HAVE_LSTAT */
 #ifdef MS_WINDOWS
-	return posix_do_stat(self, args, "et:lstat", STAT, "u:lstat", _wstati64);
+	return posix_do_stat(self, args, "et:lstat", STAT, "U:lstat", _wstati64);
 #else
 	return posix_do_stat(self, args, "et:lstat", STAT, NULL, NULL);
 #endif