Update the copy of the Qml parser

The files here are a copy of the parser from the qtdeclarative repository.
This patch combines commit cfff375afcfe63d25b3c1904ff58a90bcd1edb43 and
f876562de8eb978cea39fe72e76c49ae51ff2f97 from the qtdeclarative repository to
fix the license and allow for read-only object property syntax.

Change-Id: Idb58948cede2cd47858e3831785009f8b7ea2169
Reviewed-by: Martin Smith <martin.smith@digia.com>