0021484: EDF 2087 SMESH: Problem projection

0021484: EDF 2087 SMESH: Problem projection
    fix search of initial vertex association for group of FACEs

+  TopoDS_Shape getOuterEdge( const TopoDS_Shape theShape1, SMESH_Mesh& mesh )

-  static bool IsBoundaryEdge(const TopoDS_Edge&  edge,
-                             const TopoDS_Shape& edgeContainer,
-                             SMESH_Mesh&         mesh);
+  static TopoDS_Edge GetBoundaryEdge(const TopoDS_Shape& edgeContainer,
+                                     const SMESH_Mesh&   mesh);