ZF-5238: Feed protocol versions are not taken into consideration when looking up XML namespaces
Changes were recently introduced to Zend_Gdata_FeedEntryParent to support associating a protocol version with a feed and/or entry.
However, this protocol version is not taken into account when looking up XML namespaces during object instantiation. As a result, elements using a v2 namespace will be incorrectly stored as extension elements.
This is blocking development of features for YouTube v2.