In case a function literal is followed by parenthesis, we consider this
a hint that it will be called immediately. If we happen to have parsed
that function literal eagerly, we can also compile it eagerly.

R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10828227

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12320 ce2b1a6d-e550-0410-aec6-3dcde31c8c00