Get rid of assumptions about ".nexe" extension.

tests/ppapi_file_system/nacl.scons

 # -*- python -*-
 # Copyright (c) 2011 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.
 
 # This is a C PPAPI
 #
 # ppapi_file_system.html - test driver that loads the nexe
 # ppapi_file_system.js - set up the test driver
 # ppapi_file_system.nmf - manifest file for serving platform specific nexe binary.
 #
 # ppapi_file_system.cc - implementation of ppapi_test_lib/test_interface.h
 
 Import('env')
 
 env.Prepend(CPPDEFINES=['XP_UNIX'])
 
-nexe = 'ppapi_file_system_%s.nexe' % env.get('TARGET_FULLARCH')
+nexe = 'ppapi_file_system_%s' % env.get('TARGET_FULLARCH')
 
-env.Alias('ppapi_file_system.nexe', ['$STAGING_DIR/%s' % nexe])
+env.Alias('ppapi_file_system${PROGSUFFIX}',
+          ['$STAGING_DIR/%s${PROGSUFFIX}' % nexe])
 
 ppapi_file_system_nexe = env.ComponentProgram(nexe,
                                               ['ppapi_file_system.cc'],
                                               EXTRA_LIBS=['${PPAPI_LIBS}',
                                                           'ppapi_test_lib',
                                                           'platform',
                                                           'gio',
                                                           'pthread'])
 env.Publish(nexe, 'run',
             ['ppapi_file_system.html',
              'ppapi_file_system.nmf',
              'ppapi_file_system.js'])
 node = env.PPAPIBrowserTester('ppapi_file_system_browser_test.out',
                               url='ppapi_file_system.html',
                               files=env.ExtractPublishedFiles(nexe),
                               args=['--enable_experimental_js'])
 
 # Disabled for ARM because Chrome binaries for ARM are not available.
 # TODO(ncbray): Enable this on Windows.
 tester_is_broken = \
     (env.Bit('target_arm') or
      (env.Bit('host_windows') and
       not env.Bit('disable_dynamic_plugin_loading')))
 env.AddNodeToTestSuite(node,
                        ['chrome_browser_tests'],
                        'run_ppapi_file_system_browser_test',
                        is_broken=tester_is_broken)