case-handling fix for references in cells

components/esm_store/cell_store.hpp

@@ -17,6 +17,7 @@
 
 #include <iostream>
 #include <stdexcept>
+#include <algorithm>
 
 namespace ESMS
 {
@@ -187,8 +188,15 @@ namespace ESMS
       // Get each reference in turn
       while(cell->getNextRef(esm, ref))
         {
+            std::string lowerCase;
+
+            std::transform (ref.refID.begin(), ref.refID.end(), std::back_inserter (lowerCase),
+                (int(*)(int)) std::tolower);
+
             int rec = store.find(ref.refID);
 
+            ref.refID = lowerCase;
+
           /* We can optimize this further by storing the pointer to the
              record itself in store.all, so that we don't need to look it
              up again here. However, never optimize. There are infinite