databases/cego: update 2.36.2 -> 2.36.3

• Changed recovery strategy for existing btree / avl index objects. Before creating an index object, it is checked if exists. If exists, it is dropped and recreated. This seems to be a more stable strategy, since it may occur, that index objects still exist for several reasons.

Submitted by: Bjoern Lemke <lemke@lemke-it.com>