Made the ParserIntItem's scan return DeckItem, and put a virtual scan in ParserItem. The ParserRecord now has a simple, but functioning parse method

opm/parser/eclipse/Parser/ParserRecord.cpp

@@ -56,6 +56,13 @@ namespace Opm {
     
     DeckRecordConstPtr ParserRecord::parse(RawRecordPtr rawRecord) {
         DeckRecordPtr deckRecord(new DeckRecord());
+        
+        for(size_t i=0; i<size(); i++) {
+          ParserItemConstPtr parserItem = get(i);
+          DeckItemConstPtr deckItem = parserItem->scan(rawRecord);
+          deckRecord->addItem(deckItem);
+        }
+        
         return deckRecord;
     }
 }