nice reclassify+remesh example from Jerome Robert

benchmarks/stl/mobilette.geo

+Mesh.Algorithm = 6; //(1=MeshAdapt, 2=Automatic, 5=Delaunay, 6=Frontal, 7=bamg) 
+Mesh.CharacteristicLengthMin=1.5;
+Mesh.CharacteristicLengthMax=2.5;
+Mesh.RemeshAlgorithm=1;
+Mesh.RemeshParametrization=1;//(0) harmonic (1) conformal 
+
+
+//Merge "mobilette-class.msh"; // oringinal STL is a bit coarse
+Merge "mobilette-class-fine.msh"; // this was produced by refining once
+CreateTopology;
+
+ll[] = Line "*";
+For j In {0 : #ll[]-1}
+  Compound Line(newl) = ll[j];
+EndFor
+
+ss[] = Surface "*";
+s = news;
+For i In {0 : #ss[]-1}
+  Compound Surface(s+i) = ss[i];
+EndFor
+
+Surface Loop(1) = {s : s + #ss[]-1};
+Volume(1) = {1};