Bug 1067009 - Const-correct a few jsapi methods. r=billm
Bug 1067009 - Make JSAPI RegExp accessors work correctly proxies. r=billm
Bug 1067009 - Don't assume that someRegExp.source is an atom. r=billm
Bug 1067009 - Implement regexp_toShared for CPOWs. r=billm
Bug 1067009 - Tests. r=billm