- RoutingAlgorithmFactory is able to configure its routing algorithm by
applying bean properties in algo-string
- several improvements in abstract choicerouting algorithm
- a response holds child responses, to retrieve alternative routes
- extended request to define a number of alternative routes
- new interface, which needs to be implemented by algorithms which offer
calculation of alternative routes
- removed vsimrti packages form dependencies
- moved some vsimrti-specific classes
- default speed for ways of type "unknwon"
Merge branch 'vsimrti' of https://github.com/khuebner/graphhopper.git
into vsimrti

Conflicts:
	core/src/main/java/com/graphhopper/GraphHopperVSIMRTI.java
	core/src/main/java/com/graphhopper/reader/vsimrti/TurnCostAnalyzer.java
	core/src/main/java/com/graphhopper/reader/vsimrti/VSimRTIReader.java