Fix syntax for threading arguments.

tools/ld_bfd/ld

 #!/usr/bin/python
 # Copyright (c) 2011 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Wrapper for invoking the BFD loader
 
 A simple script to invoke the bfd loader instead of gold, removing
 threading command line options that the bfd loader doesn't support.
 Because this script is invoked from gcc via the -B flag, it needs
@@ skipping 12 matching lines @@
   if not (os.path.exists(LD_BFD) and os.access(LD_BFD, os.X_OK)):
     # Can't find the BFD loader, so invoke the unmodified argv
     args = sys.argv
     args[0] = "ld"
     print "ld_bfd/ld: using ld"
     sys.exit(subprocess.call(args))
   # found the BFD loader, so use it
   args = list()
   args.append("/usr/bin/ld.bfd")
   for arg in sys.argv[1:]:
-    if arg == "-Wl,--threads":
+    if arg == "-Wl,--threads" or arg == "--threads":
       continue
-    if arg == "-Wl,--thread-count=4":
+    if arg == "-Wl,--thread-count=4" or arg == "--thread-count=4":
       continue
     args.append(arg)
   print("ld_bfd/ld: exec ", args)
   sys.exit(subprocess.call(args))
 
 if __name__ == "__main__":
   main()