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/ShapeProcess/ShapeProcess.cdl

@@ -40,18 +40,15 @@ uses
 is
 
     class Context; 
-    	---Purpose: Provides general context for processing (resource file)
+
     	class ShapeContext;
-	    ---Purpose: Extends context to support processing of the shape
 
     deferred class Operator;
-    	---Purpose: Defines interface to Operator which do the job
+
 	primitive OperFunc;
 	class UOperator;
-	    ---Purpose: Customizable operator-container loaded by OperFunc
 
     class OperLibrary;
-    	---Purpose: Provides standard set of operators
 
     class DictionaryOfOperator instantiates 
     	  Dictionary from Dico (Operator from ShapeProcess);