In long distance path parser, a pathway is a LINK.
Make StreetfulStopLinker compatible with pathways.

Skip connecting stops with entrances (!isStreetLinkable()).
Also, do not try to link stops already connected with pathways.
Print elapsed time in heuristic initialization.

Insead of timestamp.
Merge pull request #1441 from laurentg/precomputedtransfers

Make long distance mode compatible with existing pathways.