Merge GDB 7.5.1

gdb/testsuite/gdb.base/restore.c

 /* This testcase is part of GDB, the GNU debugger.
 
    Copyright 1998-1999, 2001, 2003-2004, 2012 Free Software Foundation,
    Inc.
 
    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
    (at your option) any later version.
 
@@ skipping 252 matching lines @@
   printf ("caller3 () => %d\n", caller3 ());
   printf ("caller4 () => %d\n", caller4 ());
   printf ("caller5 () => %d\n", caller5 ());
 }
 
 /* generated code ends here */
 
 int main ()
 {
   register int local;
-#ifdef usestubs
-  set_debug_traps();
-  breakpoint();
-#endif
   driver ();
   printf("exiting\n");
   return 0;
 }