incomplete work on using clustered stops instead of individual stops in profile routing
Merge branch 'profileClusteredStops' (does not compile, work in progress)

Conflicts:
	src/main/java/org/opentripplanner/profile/ProfileRouter.java
	src/main/java/org/opentripplanner/profile/Ride.java
	src/main/java/org/opentripplanner/routing/graph/GraphIndex.java
add method to graphindex to get the stop cluster for a stop
Use stop clusters in profile routing.

Lifted mode checks out of inner loops.
Extend rides only to stops that are useful for transfers or reaching the destination.
Merge branch 'master' of github.com:opentripplanner/OpenTripPlanner