Add topology population functions taking Topology record instead of name

[strk]

As reported in #5667 adding a lot of lines to a topology by using the TopoGeo_addLineString results in a query to the topology.topology table for each and every call. By taking a topology.topology record instead of a topology name we give the user the possibility to reuse such a record across calls.

[robe]

Feel free to push back to 3.5.0 if you can get this done in next couple of days. If not I think it's safer to punt this for next major release cycle.