MATSim Code

change the setter signature to be consistent with the other setters

checks if activityFacilities are empty

the ActivityFacilities object is not necessarily null when facilities
are not used.

change the test so that the leg in the plan does not have the remain the same instance

add log import

setter and getter for the TripRouterFactory

the getter is currently lazily initializing the factory,
due to the fact that we have to wait for the transit router
to be initialized. Moving the transit router init to the setUp() method
would allow cleaner initialization.

add factories which reproduce the default settings

The factories produce trip routers with the routing settings used
in the returned PlansCalcRoute instance.

updated package documentation

move the trip router to the core

the "trip routing" components are moved from my playground to the router
package in the core.

javadoc

create an "old" package

The classes depending on the old approach are moved to this package,
to make sure that they are identified as such.
This commit and the next ones aim at including a new routing interface,
which basically generalizes the transit interface to any routing module
(any routing module is allowed to return an arbitrary sequence of plan
elements as a route)