Fix: FilterByObjType (RPL predefined function) problems: multiple types; DataObj [5502]
Bug Number: 5502
Release notes (y/n): Yes
For Release Nums: 6.5

Gnats 5502: FilterByObjType: (1) only first type used (2) 'DataObj' problem

The first problem was caused by a coding error.  In function, 
predefinedFilterByObjType(), The intended C++ iteration ('for' loop) over 
the object types list was actually iterating over a presumably-older version 
of the 'for' loop ...

   for (typeIter = typeStrings.first(), index = 0; index < numItems;
         typeIter = typeStrings.next(typeIter), index++ )
   for ( index = 0; index < numItems; index++ )

Since the two 'for' statements used the same termination expression 
(index < numItems), the outer loop didn't repeat. The effective iteration 
was controlled by the inner (latter) 'for' statement.  So, the typeIter 
iterator was not being advanced.  Only the first object type in the object 
type list was being seen.

The second problem was lack of support for 'DataObj' in the local function:
convertStringToSimObjType().  Note: Support for 'AggDistributionCanal' had 
also been omitted.

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