Hello rsc (cc: re2-dev@googlegroups.com), I'd like you to review this change.
*** Submitted as http://code.google.com/p/re2/source/detail?r=5e488cdeff79 *** class vs struct in forward decls (reported by Tuncer Ayaz) R=rsc CC=re2-dev http://codereview.appspot.com/3831042