THRIFT-2471 Make cpp.ref annotation language agnostic

THRIFT-2471 Make cpp.ref annotation language agnostic
Client: compiler general
Patch: Dave Watson

This closes #113

commit 52b99af4ee1574253dcb77933d76a7ebb2d830df
 Author: Dave Watson <davejwatson@fb.com>
 Date: 2014-04-23T20:05:56Z

change cpp.ref to &

commit 3f9d31cc6140367529fd8f7b1b67056ec321786f
 Author: Dave Watson <davejwatson@fb.com>
 Date: 2014-04-23T21:50:29Z

Recursion depth limit

commit 61468e4534ce9e6a4f4f643bfd00542d13600d83
 Author: Dave Watson <davejwatson@fb.com>
 Date: 2014-04-25T19:59:18Z

shared_ptr for reference type