Add Subzero to test scripts.

tests/minnacl/nacl.scons

 # -*- python -*-
 # Copyright 2012 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')
 
 # valgrind has problems with minimal_test_guest
 if env.IsRunningUnderValgrind():
   Return()
@@ skipping 21 matching lines @@
 # The minimal_test_guest expects fairly minimal code. Without -nostdlib
 # in the TRANSLATEFLAGS, a dummy pnacl shim will be the real entry
 # point instead of _start, and that will end up doing a bit more work
 # (e.g., an IRT query for nacl_read_tp). This extra work seems to be okay
 # with --use_separate_thread, but crashes otherwise.
 env.Replace(TRANSLATEFLAGS=['-nostdlib'])
 # Avoid supporting non-standard linker-related TRANSLATEFLAGS (-nostdlib) with
 # the sandboxed translator.
 if env.Bit('use_sandboxed_translator'):
   Return()
+# TODO(stichnot,jvoung): For this special minimal-code test (see comment above),
+# linking the Subzero generated ELF file results in a nexe that fails
+# validation.  https://code.google.com/p/nativeclient/issues/detail?id=4134
+if env.Bit('use_sz'):
+  Return()
 test_prog = env.GetTranslatedNexe(test_prog)
 
 is_broken = not env.Bit('nacl_static_link')
 
 node = env.CommandTest('minimal_test.out',
                        env.AddBootstrap(runner, [test_prog]),
                        stdout_golden=env.File('minimal_test.stdout'))
 env.AddNodeToTestSuite(node, ['small_tests'], 'run_minnacl_test',
                        is_broken=is_broken)
 
 node = env.CommandTest('minimal_test_separate_thread.out',
                        env.AddBootstrap(runner,
                                         ['--use_separate_thread', test_prog]),
                        stdout_golden=env.File('minimal_test.stdout'))
 env.AddNodeToTestSuite(node, ['small_tests'],
                        'run_minnacl_separate_thread_test',
                        is_broken=is_broken)