[pgrouting-dev] Pushed new version of pgr_vidsToDMatrix() to develop

Hi all,

I just pushed a new version of pgr_vidsToDMatrix() that is coded in C and about 3 times faster then the plpgsql version. I'll probably remove the plpgsql version at some point as this is better.

The function is based on kdijkstra and much of the performance is because I load the edges only and then run kdijkstra N times. There is still some room for improvement if someone with Boost experience want to try a build the graph once and then reuse that N times. My could builds the graph N time.