0024784: Move documentation in CDL files to proper location

Mostly duplicated comments were removed and missing ones were moved
into dedicated class CDL files.
Some more duplicated comments were removed from CDL files.
Correction of merge

src/ChFiDS/ChFiDS.cdl

@@ -52,8 +52,6 @@ is
     
 
     class Regul;
-    ---Purpose: Grouping  of indices of  a curve and  of faces/surfaces
-    --          that it  relies  on coding of regularities.
 
     class Regularities instantiates List from TCollection
                                     (Regul from ChFiDS);
@@ -70,20 +68,12 @@ is
         (CircSection from ChFiDS,SecArray1 from ChFiDS);
 
     class Map; 
-    ---Purpose: encapsulation of IndexedDataMapOfShapeListOfShape
-
 
     class CommonPoint;
-    ---Purpose: point    start/end of  fillet common  to  2 adjacent  filets 
-    --          and  to an edge on  one of 2 faces participating
-    --          in  the construction of  the  fillet
 
     class FaceInterference;
-    ---Purpose: interference face/fillet 
 
     class SurfData;
-    ---Purpose: data structure for all information related to  the
-    --          fillet and to 2 faces vis a vis
 
     class SequenceOfSurfData instantiates Sequence from TCollection
     	    (SurfData from ChFiDS);
@@ -93,7 +83,6 @@ is
     	     SequenceOfSurfData from ChFiDS);
 	    
     class Stripe;
-    ---Purpose: Data caracterising a band of fillet.
 
     class ListOfStripe instantiates List from TCollection
     	    (Stripe from ChFiDS);
@@ -104,31 +93,20 @@ is
 					    ShapeMapHasher from TopTools); 
 
     class StripeMap;
-    ---Purpose: encapsulation of IndexedDataMapOfVertexListOfStripe
 
     class ElSpine;
-    ---Purpose: Spin  elementary  calculated   approximation d  un
-    --          troncon de spine.
-    
+
     class HElSpine instantiates GenHCurve from Adaptor3d (ElSpine from ChFiDS);
 
     class ListOfHElSpine instantiates List from TCollection
     	    	        (HElSpine from ChFiDS);
 
     class Spine;
-    ---Purpose: list of edges allowing the construction of fillet
-    --          or chamfer. Such edges are mutually tangent 
-    --          and cross tangent faces.
-
 
     class FilSpine;   --- inherits Sp
-    ---Purpose: Contains more information relative to  the vector.
-          
 
     class ChamfSpine; --- inherits Sp
-    ---Purpose: Contains characteristics of  the chamfer.
-    --          pour tous les chanfreins
-   
+
     class SequenceOfSpine instantiates 
     	    Sequence from TCollection(Spine from ChFiDS);
 

src/ChFiDS/ChFiDS_CommonPoint.cdl

@@ -16,7 +16,9 @@
 
 class CommonPoint from ChFiDS 
 
-	---Purpose: 
+	---Purpose: point    start/end of  fillet common  to  2 adjacent  filets
+  --          and  to an edge on  one of 2 faces participating
+  --          in  the construction of  the  fillet
 
 uses Orientation from TopAbs,
      Vertex from TopoDS,

src/ChFiDS/ChFiDS_Spine.cdl

@@ -17,7 +17,7 @@
 class Spine from ChFiDS inherits TShared from MMgt
 
 	---Purpose: Contains information necessary for construction of
-	--          a 3D fillet :
+	--          a 3D fillet or chamfer:
 	--          
 	--          
 	--          - guideline composed of edges of the solid, tangents

src/ChFiDS/ChFiDS_Stripe.cdl

@@ -16,7 +16,7 @@
 
 class Stripe from ChFiDS inherits TShared
 
-	---Purpose: data structure associe au coin
+	---Purpose: Data characterising a band of fillet.
 
 uses HData from ChFiDS,
      Spine from ChFiDS,

src/ChFiDS/ChFiDS_StripeMap.cdl

@@ -16,7 +16,7 @@
 
 class StripeMap from ChFiDS 
 
-	---Purpose: 
+	---Purpose: encapsulation of IndexedDataMapOfVertexListOfStripe
 
 uses 
      IndexedDataMapOfVertexListOfStripe from ChFiDS,

src/ChFiDS/ChFiDS_SurfData.cdl

@@ -16,7 +16,8 @@
 
 class SurfData from ChFiDS inherits TShared from MMgt
 
-	---Purpose: 
+	---Purpose: data structure for all information related to  the
+  --          fillet and to 2 faces vis a vis
 
 uses 
     Pnt2d from gp,