Add ragel validator to SCONS

PRESUBMIT.py

 # Copyright (c) 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.
 
 # Documentation on PRESUBMIT.py can be found at:
 # http://www.chromium.org/developers/how-tos/depottools/presubmit-scripts
 
 import os.path
 import sys
 
 TOP_DIR = 'native_client'
 MAIN_DEPS = os.path.join(TOP_DIR, 'DEPS')
 
 # List of directories to not apply presubmit project checks, relative
 # to the NaCl top directory
 EXCLUDE_PROJECT_CHECKS_DIRS = [
     # The following contain test data (including automatically generated),
     # and do not follow our conventions.
     'src/trusted/validator_x86/testdata/32',
     'src/trusted/validator_x86/testdata/64',
     'src/trusted/validator/x86/decoder/generator/testdata/32',
     'src/trusted/validator/x86/decoder/generator/testdata/64',
     # The following directories contains automatically generated source,
     # which may not follow our conventions.
     'src/trusted/validator_x86/gen',
     'src/trusted/validator/x86/decoder/gen',
     'src/trusted/validator/x86/decoder/generator/gen',
     'src/trusted/validator/x86/ncval_seg_sfi/gen',
     'src/trusted/validator_arm/gen',
+    'src/trusted/validator_ragel/gen',
     ]
 
 def NaclTopDir():
   cwd = os.getcwd()
   pos = cwd.rfind(TOP_DIR)
   if pos < 0:
     print 'ERROR: expected to be called from with %s' % TOP_DIR
   return cwd[:pos + len(TOP_DIR)]
 
 def _CommonChecks(input_api, output_api):
@@ skipping 99 matching lines @@
       'nacl-mac10.6-newlib-dbg-clang',
       # pnacl scons bots
       'nacl-lucid_64-newlib-arm_qemu-pnacl',
       'nacl-lucid_64-newlib-x86_32-pnacl',
       'nacl-lucid_64-newlib-x86_64-pnacl',
       # pnacl spec2k bots
       'nacl-lucid_64-newlib-arm_qemu-pnacl-spec',
       'nacl-lucid_64-newlib-x86_32-pnacl-spec',
       'nacl-lucid_64-newlib-x86_64-pnacl-spec',
   ]