Merge GDB 7.5.1

gdb/testsuite/gdb.base/echo.exp

 #   Copyright (C) 1988, 1990-1992, 1997, 2007-2012 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.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 # This file was written by Rob Savoye. (rob@cygnus.com)
 
 # Crank up gdb.
 gdb_start
 
-if $tracelevel then {
-    strace $tracelevel
-}
-
 #
 # test the echo command
 #
 
 gdb_test "echo Hello world!\\n" "Hello world!" "Echo test"