- classical enrichment using xSpaceXFEM is removed and replaced by a mesh modification with superimposed elements,
- cutting procedure using xPhysSurfByTagging is removed and is now closely related to mesh modification using an integration mesh,
=> see MeshGeneration.{h,cc}
- xSubMesh are limited to TLSGeom.cc so that it is orthogonal to the rest of the application and so that anyone annoyed by such
 an implementation can change it,
=> see TLSGeom.cc
- work of Benoit Le on solver interface is added (it has been refactored to treat plasticity case),
=> see LinearSystem.{h,cc}
- the whole application is simplified and several member function names changed, mostly inside TLSSolver and Formulation (QS and Dyn).
=> see TLSSolver.{h,cc} and Formulation.{h,cc}
- numerical integration changed and is now based on an specific integration with fixed integration point positions and evolving weights
to integrate a polynom exactly on a part of an element.
=> see MeshGeneration.{h,cc}
- Space.{h,cc} is removed since implementation was slow and replaced by linear algebra using a sparse matrix.
=> see TLSSolver.cc



git-svn-id: https://svn.ec-nantes.fr/eXlibris/Applis/TLSDuctile@2178 fbbead7c-fb4d-4173-aa67-51132c73c120