Fixed: regression in issue 1579 concerning readline() in d8. BUG=v8:1579
Fixed: regression in issue 1579 concerning readline() in d8.
BUG=v8:1579

Review URL: http://codereview.chromium.org/7537023

git-svn-id: b158db1e4b4ab85d4c9e510fdef4b1e8c614b15b@8771 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh