Fix CreateEmptyFunction to not share descriptor array.
Fix CreateEmptyFunction to not share descriptor array.

R=ulan@chromium.org
BUG=v8:1465

Review URL: https://chromiumcodereview.appspot.com/10388158

git-svn-id: b158db1e4b4ab85d4c9e510fdef4b1e8c614b15b@11571 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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