in the case of mixins we don't want to delete the incoming property because it will be removed later

Enyo-DCO-1.1-Signed-off-by: Cole Davis <cole.davis@lge.com>
fix serious typo in MultipleDispatchSupport and add initial test

Enyo-DCO-1.1-Signed-off-by: Cole Davis <cole.davis@lge.com>
complete multiple dispatch unit test

Enyo-DCO-1.1-Signed-off-by: Cole Davis <cole.davis@lge.com>
fix observer and computed support, fix concatenated properties to not require looking at published twice, add observer and computed unit tests

Enyo-DCO-1.1-Signed-off-by: Cole Davis <cole.davis@lge.com>
add binding test for computed

Enyo-DCO-1.1-Signed-off-by: Cole Davis <cole.davis@lge.com>