Address issue 6066 where RequestFactoryEditorDriver doesn't collect composite paths.
http://gwt-code-reviews.appspot.com/1363801
Patch by: t.broyer
Review by: bobv


git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@9839 8db76d5a-ed1c-0410-87a9-c151d255dfc7