add the Bifurcation test case for curvature

benchmarks/curvature/Bifurcation/BifurcationRemeshCurvature.geo

+Mesh.Algorithm=1; //1=MeshAdapt, 5=Delaunay, 6=Frontal
+Mesh.CharacteristicLengthFactor=0.15;
+Mesh.CharacteristicLengthFromCurvature=1; //-clcurv
+Mesh.CharacteristicLengthMin = 0.05; //-clmin 0.05
+Mesh.CharacteristicLengthMax = 3.00; //-clmax 4.0
+Mesh.LcIntegrationPrecision=1.e-5; //-epslc1d
+Mesh.MinimumCirclePoints=30; //default=7
+Mesh.CharacteristicLengthFromPoints = 0;
+Mesh.CharacteristicLengthExtendFromBoundary=0;
+
+Merge "BifurcationInput.msh";
+
+CreateTopology;
+
+Compound Surface(20) = {1};
+Mesh.RemeshParametrization=0; //(0) harmonic (1) conformal 
+Mesh.RemeshAlgorithm=1; //(0) nosplit (1) automatic (2) split only with metis ///Default: 1 
+
+Physical Surface("Wall") = {20};
+
+
+
+