[MeL] getMeshSurface: MaL::Vector3 -> Eigen::Vector3d.

...ations/DataExplorer/DataView/DirectConditionGenerator.cpp

Applications/DataExplorer/DataView/MeshView.cpp

...cations/DataExplorer/DataView/SurfaceExtractionDialog.cpp

Applications/DataExplorer/DataView/SurfaceExtractionDialog.h

...Utils/MeshEdit/CreateBoundaryConditionsAlongPolylines.cpp

Applications/Utils/MeshEdit/ExtractSurface.cpp

...s/MeshGeoTools/computeSurfaceNodeIDsInPolygonalRegion.cpp

MeshGeoToolsLib/GeoMapper.cpp

MeshLib/MeshEditing/AddLayerToMesh.cpp

MeshLib/MeshSurfaceExtraction.cpp

MeshLib/MeshSurfaceExtraction.h

Tests/MeshLib/TestAddLayerToMesh.cpp