[binutils] Bump binutils to 2.20.1

binutils/gold/dynobj.h

 // dynobj.h -- dynamic object support for gold   -*- C++ -*-
 
 // Copyright 2006, 2007, 2008 Free Software Foundation, Inc.
 // Written by Ian Lance Taylor <iant@google.com>.
 
 // This file is part of gold.
 
 // This program is free software; you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation; either version 3 of the License, or
@@ skipping 566 matching lines @@
 
   // Get the dynamic object to use for SYM.
   Dynobj*
   get_dynobj_for_sym(const Symbol_table*, const Symbol* sym) const;
 
   // Return the version index to use for SYM.
   unsigned int
   version_index(const Symbol_table*, const Stringpool*,
                 const Symbol* sym) const;
 
+  // Define the base version of a shared library.
+  void
+  define_base_version(Stringpool* dynpool);
+
   // We keep a hash table mapping canonicalized name/version pairs to
   // a version base.
   typedef std::pair<Stringpool::Key, Stringpool::Key> Key;
 
   struct Version_table_hash
   {
     size_t
     operator()(const Key& k) const
     { return k.first + k.second; }
   };
@@ skipping 12 matching lines @@
   Defs defs_;
   // The version references.
   Needs needs_;
   // The mapping from a canonicalized version/filename pair to a
   // version index.  The filename may be NULL.
   Version_table version_table_;
   // Whether the version indexes have been set.
   bool is_finalized_;
   // Contents of --version-script, if passed, or NULL.
   const Version_script_info& version_script_;
+  // Whether we need to insert a base version.  This is only used for
+  // shared libaries and is cleared when the base version is defined.
+  bool needs_base_version_;
 };
 
 } // End namespace gold.
 
 #endif // !defined(GOLD_DYNOBJ_H)