fixes to Vehicle::carry - only reject too-big passengers in c2e mode, plus other bugfixes
fixes to Vehicle::carry - only reject too-big passengers in c2e mode, plus other bugfixes

crystalline/openc2e,ccdevnet/openc2e,bdonlan/openc2e,bdonlan/openc2e,crystalline/openc2e,crystalline/openc2e,bdonlan/openc2e,bdonlan/openc2e,ccdevnet/openc2e,crystalline/openc2e,ccdevnet/openc2e,ccdevnet/openc2e,ccdevnet/openc2e,crystalline/openc2e,ccdevnet/openc2e