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/TopOpeBRep/TopOpeBRep.cdl

@@ -109,16 +109,15 @@ is
     class GeomTool;
      
     class FacesIntersector;
-    ---Purpose: Describes the intersection of two faces.
+
     pointer PFacesIntersector to FacesIntersector from TopOpeBRep;
 	
     class EdgesIntersector;
-    ---Purpose: Describes the intersection of two edges on the same surface
+
     pointer PEdgesIntersector to EdgesIntersector from TopOpeBRep;
 
     class FaceEdgeIntersector;
-    ---Purpose: Describes the intersection of a face and an edge.
-	
+
     class ShapeScanner;
 
     class ShapeIntersector;

src/TopOpeBRep/TopOpeBRep_EdgesIntersector.cdl

@@ -15,6 +15,7 @@
 -- commercial license or contractual agreement.
 
 class EdgesIntersector from TopOpeBRep 
+    ---Purpose: Describes the intersection of two edges on the same surface
 
 uses
 

src/TopOpeBRep/TopOpeBRep_FaceEdgeIntersector.cdl

@@ -16,7 +16,7 @@
 
 class FaceEdgeIntersector from TopOpeBRep
 
-	---Purpose: 
+	---Purpose: Describes the intersection of a face and an edge.
 
 uses
 

src/TopOpeBRep/TopOpeBRep_FacesIntersector.cdl

@@ -16,7 +16,7 @@
 
 class FacesIntersector from TopOpeBRep 
 
-	---Purpose: 
+	---Purpose: Describes the intersection of two faces.
 
 uses