Teach llvm-objdump to disassemble sections symbol by symbol.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135289 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Object/ObjectFile.h

@@ -172,6 +172,10 @@ public:
       return &Current;
     }
 
+    const content_type &operator*() const {
+      return Current;
+    }
+
     bool operator==(const content_iterator &other) const {
       return Current == other.Current;
     }