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/SelectMgr/SelectMgr.cdl

@@ -195,44 +195,23 @@ is
     deferred class SelectableObject;
 
     deferred class ViewerSelector;
-    	---Purpose: class selector dedicated to a view ;
-    	--          contains all the sensitive Entities present 
-    	--          in a view at selection time 
-
 
     deferred class Filter;
 
     deferred class CompositionFilter;     
 
     class AndFilter;
-    	---Purpose: AND filter
-    
+
     class OrFilter;
-    	---Purpose: OR filter
+
 
 
 
     class EntityOwner;
-    	---Purpose: Inherits EntityOwner from SelectBasics;
-    	--          knows the selectable object it was made from;
-    	--          
-
 
     class Selection;
-    	---Purpose: set of primitives for a mode an an Object;
-    	--          In fact a Selectable Object will have one or many
-    	--          modes of selection or decomposition;
-    	--          A Selection object will contain all the primitives
-    	--          coming from one decomposition.
-
-
 
     class  SelectionManager;
-    	---Purpose: manages all the Operations before selection -
-    	--          i.e. add specific selections for an object in a selectionview
-
-
-
 
     ---Category: instantiations of classes from TCollection...
 
@@ -276,7 +255,5 @@ is
     pointer SOPtr to SelectableObject from SelectMgr;
 
     imported CompareResults;
-        ---Purpose: Redefine CompareOfInteger from TCollection, to be used
-        --          in method SortResult from class ViewerSelector
 
 end SelectMgr;

src/SelectMgr/SelectMgr_CompareResults.hxx

@@ -17,6 +17,9 @@
 #include <SelectMgr_SortCriterion.hxx>
 #include <TCollection_CompareOfInteger.hxx>
 
+// Purpose: Redefine CompareOfInteger from TCollection, to be used
+// in method SortResult from class ViewerSelector
+
 class SelectMgr_CompareResults: public TCollection_CompareOfInteger
 {
  public: