evaluation of conditional restriction

[ironspock]

Feature

OSRM should evaluate access:conditional restrictions (e.g. in case of streets, ways are temporairly closed of construction)
access:conditional = no @ (-)
motor_vehicle:conditional = ...
...

At the moment a route will calculated, but is possibly no accessible in real life because of mentioned conditional restrictions (refer to screen dump and https://www.openstreetmap.org/way/138541665)