[dev] Rdo array Access.

[Duck]

Why the RDO array access support was dropped?  This broke some my scripts as 
RDO object or better PDO instances  cannot be serialized and so stored. So as 
is not possible to store it an a cache them you must convert the data into an 
array. Now we are forced to check every to a data is passed in a function, to 
use different approaches if the data passed are an object  or an array (newly 
constructed of used read from cache).

Duck