This patch introduce internal changes in order to #1 actually clip
content avoid growing parent's size and keeping controls with their
own pre-set sizes and also #2 add a scrollable feature to frame control.
Signed-off-by: Leandro Dorileo <leandro.maciel.dorileo@intel.com>
In order to guarantee BaseControl and Control are fully comparable in the
BaseControl level this patch introduces a refID interface, so the objects
can safely be comparable based on this interface.
