Make Binary the parent of ObjectFile and update children to new interface.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133870 91177308-0d34-0410-b5e6-96231b3b80d8

tools/llvm-nm/llvm-nm.cpp

@@ -277,7 +277,7 @@ static void DumpSymbolNamesFromObject(ObjectFile *obj) {
     SymbolList.push_back(s);
   }
 
-  CurrentFilename = obj->getFilename();
+  CurrentFilename = obj->getFileName();
   SortAndPrintSymbolList();
 }