[test] Process to locally develop and upstream test262 tests

test/test262/list.py

Index: test/test262/list.py
diff --git a/test/test262/list.py b/test/test262/list.py
index 9b36ce789c5baa217d118ecb5e5294c86336ffa7..a5c3c48f8049ea0bb2f00db5ef0e1f583fcc88ad 100755
--- a/test/test262/list.py
+++ b/test/test262/list.py
@@ -10,7 +10,8 @@ from itertools import chain
 
 os.chdir(os.path.dirname(os.path.abspath(__file__)))
 
-for root, dirs, files in chain(os.walk("data"), os.walk("harness")):
+for root, dirs, files in chain(os.walk("data"), os.walk("harness"),
+                               os.walk("local-tests")):
   dirs[:] = [d for d in dirs if not d.endswith('.git')]
   for name in files:
     # These names are for gyp, which expects slashes on all platforms.