Eliminate double-presentation of Table details during structural navigation
Eliminate double-presentation of Table details during structural navigation

Calling saveFocusedObject() in setCaretPosition() had by side effect
eliminated some chattiness when navigating by Table. Setting the priorObj
to the table before presenting the cell solves that problem.

GNOME/orca,GNOME/orca,GNOME/orca,GNOME/orca