Some TSP instances do not load

[ascheibe]

If you try to load some TSP instances (e.g. pla33810, pla7397 or pla85900), the following exception is thrown:

This problem does not support loading the instance pla33810
InvalidDataException: The given instance uses an unsupported distance measure and is too large for using a distance matrix.
   at HeuristicLab.Problems.TravelingSalesman.TravelingSalesmanProblem.Load(TSPData data) in c:\dev\trunk\sources\HeuristicLab.Problems.TravelingSalesman\3.3\TravelingSalesmanProblem.cs:line 387
   at HeuristicLab.Problems.Instances.Views.ProblemInstanceProviderViewGeneric`1.instancesComboBox_SelectionChangeCommitted(Object sender, EventArgs e) in c:\dev\trunk\sources\HeuristicLab.Problems.Instances.Views\3.3\ProblemInstanceProviderViewGeneric.cs:line 94

[abeham]

They use the CEIL_2D distance measure which is probably not implemented. Either we include an evaluator for this or drop the instances from the library.

[jkarder]

r9848: implemented TSPUpperEuclideanPathEvaluator for instances using the CEIL_2D distance measure

[gkronber]

Reviewed and tested r9848.

[gkronber]

r9858: merged r9848 from trunk to stable branch