Fix the --max-old-space-size flag so it can be used on 64 bit for

test/mozilla/mozilla.status

 # Copyright 2009 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
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 205 matching lines @@
 ecma/String/15.5.4.12-1: FAIL_OK
 ecma/String/15.5.4.12-4: FAIL_OK
 
 # This test uses an older version of the unicode standard that fails
 # us because we correctly convert the armenian small ligature ech-yiwn
 # to the two upper-case characters ECH and YIWN, whereas the older
 # unicode version converts it to itself.
 ecma/String/15.5.4.12-5: FAIL_OK
 
 # Creates a linked list of arrays until we run out of memory or timeout.
-js1_5/Regress/regress-312588: FAIL || TIMEOUT
+js1_5/Regress/regress-312588: SKIP
 
 
 # Runs out of memory because it compiles huge functions.
 js1_5/Function/regress-338001: FAIL_OK
 js1_5/Function/regress-338121-01: FAIL_OK
 js1_5/Function/regress-338121-02: FAIL_OK
 js1_5/Function/regress-338121-03: FAIL_OK
 
 # Expectes 'prototype' property of functions to be enumerable.
 js1_5/Function/10.1.6-01: FAIL_OK
@@ skipping 614 matching lines @@
 ecma/Date/15.9.5.12-2: SKIP
 ecma/Date/15.9.5.8: SKIP
 ecma/Date/15.9.5.9: SKIP
 ecma/Date/15.9.5.11-2: SKIP
 ecma/Expressions/11.7.2: SKIP
 ecma/Expressions/11.10-2: SKIP
 ecma/Expressions/11.7.3: SKIP
 ecma/Expressions/11.10-3: SKIP
 ecma/Expressions/11.7.1: SKIP
 ecma_3/RegExp/regress-209067: SKIP