Get rid of assumptions about ".nexe" extension.

tests/data_not_executable/nacl.scons

 # -*- python -*-
 # Copyright 2010 The Native Client Authors.  All rights reserved.
 # Use of this source code is governed by a BSD-style license that can
 # be found in the LICENSE file.
 
 
 Import('env')
 
 prog_env = env.Clone()
 
 if prog_env.Bit('bitcode'):
   prog_env.AddBiasForPNaCl()
 
-prog_env.ComponentProgram('execute_data.nexe', ['execute_data.c'])
+nexe = prog_env.ComponentProgram('execute_data', ['execute_data.c'])
 
 # We check the output to ensure that the process doesn't die for an
 # unexpected reason.
 node = prog_env.CommandSelLdrTestNacl(
     'execute_data.out',
-    command=[prog_env.File('execute_data.nexe')],
+    nexe,
     exit_status='untrusted_sigsegv_or_equivalent',
     stdout_golden=prog_env.File('execute_data.stdout'))
 
 # This test does not work under qemu-arm because qemu-arm does not
 # support the NX page protection bit.
 is_broken = prog_env.Bit('target_arm') and prog_env.UsingEmulator()
 
 # This test also fails on ARM machines running Linux versions before
 # 2.6.32.9, which don't handle the fault properly.  The fault causes
 # the process to hang rather than receive a signal.
 # TODO(mseaborn): Re-enable when the ARM Buildbot slave has been
 # upgraded to a newer kernel.
 is_broken = prog_env.Bit('target_arm')
 
 # 64-bit Ubuntu Hardy (Linux) on VMWare also seems to have problems
 # with NX page protection, but later versions of Ubuntu are OK on
 # VMWare, and 64-bit Hardy is OK on real hardware.
 if not prog_env.Bit('disable_hardy64_vmware_failures'):
   prog_env.AddNodeToTestSuite(node, ['small_tests'], 'run_execute_data_test',
                          is_broken=is_broken)