This class holds the additional data we use to annotate QObject.
At the moment we store the default values and bindings there.
I also moved the code to populate and read the hashes
into that class.
Change-Id: Ib5e4b5291cfd2bf5555a896bf42578d07f2c6253
Reviewed-by: Tim Jenssen <tim.jenssen@theqtcompany.com>
