ARM: Support hardfloat in SCons build and make it a build time setting

tools/test.py

 #!/usr/bin/env python
 #
 # Copyright 2008 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
@@ skipping 1211 matching lines @@
                     help="Run with the --crankshaft flag",
                     default=False, action="store_true")
   result.add_option("--shard-count",
                     help="Split testsuites into this number of shards",
                     default=1, type="int")
   result.add_option("--shard-run",
                     help="Run this shard from the split up tests.",
                     default=1, type="int")
   result.add_option("--noprof", help="Disable profiling support",
                     default=False)
-  result.add_option("--hardfloat", help="use hardware floating point ABI",
-                    default=False, action="store_true")
   return result
 
 
 def ProcessOptions(options):
   global VERBOSE
   VERBOSE = options.verbose
   options.mode = options.mode.split(',')
   for mode in options.mode:
     if not mode in ['debug', 'release']:
       print "Unknown mode %s" % mode
@@ skipping 22 matching lines @@
   if options.nostress:
     VARIANT_FLAGS = [[],['--nocrankshaft']]
   if options.crankshaft:
     if options.special_command:
       options.special_command += " --crankshaft"
     else:
       options.special_command = "@--crankshaft"
   if options.noprof:
     options.scons_flags.append("prof=off")
     options.scons_flags.append("profilingsupport=off")
-  if options.hardfloat:
-    if options.special_command:
-      options.special_command += " --hardfloat"
-    else:
-      options.special_command = "@--hardfloat"
   return True
 
 
 REPORT_TEMPLATE = """\
 Total: %(total)i tests
  * %(skipped)4d tests will be skipped
  * %(nocrash)4d tests are expected to be flaky but not crash
  * %(pass)4d tests are expected to pass
  * %(fail_ok)4d tests are expected to fail that we won't fix
  * %(fail)4d tests are expected to fail that we should fix\
@@ skipping 213 matching lines @@
     for entry in timed_tests[:20]:
       t = FormatTime(entry.duration)
       sys.stderr.write("%4i (%s) %s\n" % (index, t, entry.GetLabel()))
       index += 1
 
   return result
 
 
 if __name__ == '__main__':
   sys.exit(Main())