0020743: EDF 1271 SMESH : Create a mesh from a group / export groups

0020743: EDF 1271 SMESH : Create a mesh from a group / export groups

+  void ExportPartToMED(SMESH::SMESH_IDSource_ptr meshPart,
+                       const char*               file,
+                       CORBA::Boolean            auto_groups,
+                       SMESH::MED_VERSION        version,
+                       CORBA::Boolean            overwrite) throw (SALOME::SALOME_Exception);
+  void ExportPartToDAT(SMESH::SMESH_IDSource_ptr meshPart,
+                       const char*               file) throw (SALOME::SALOME_Exception);
+  void ExportPartToUNV(SMESH::SMESH_IDSource_ptr meshPart,
+                       const char*               file) throw (SALOME::SALOME_Exception);
+  void ExportPartToSTL(SMESH::SMESH_IDSource_ptr meshPart,
+                       const char*               file,
+                       CORBA::Boolean            isascii) throw (SALOME::SALOME_Exception);