Version 3.26.13.1 (merged r20705)

Allow GetScriptNameOrSourceURL to be called with exception pending.

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/236713004

git-svn-id: https://v8.googlecode.com/svn/trunk@20708 ce2b1a6d-e550-0410-aec6-3dcde31c8c00