+ removed multiple geometry typedefs
+ use geometry_type
+ revert to storing vertices in vector_vertex
(previous implementation using std::vector was
fragmenting heap causing performance issues with large geometries)
+ FIXME: hit_test is broken!
- occi.input: added optional estimate_extent parameter (much like pgsql.input)
- occi.input: added prefetch of 100 rows in spatial queries (must be tunable)
- occi.input: commented a console debug clog output that was flooding my bash