Mark Mozilla test as possible timeout

The Mozilla test ecma/Date/15.9.5.10-2 have been timing out a couple of times on the ARM simulator in debug mode.
Review URL: http://codereview.chromium.org/2070018

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4682 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

test/mozilla/mozilla.status

@@ -161,6 +161,7 @@ js1_5/Regress/regress-416628: PASS || FAIL || TIMEOUT if $mode == debug
 # In Denmark the adjustment starts one week earlier!.
 # Tests based on shell that use dates in this gap are flaky.
 ecma/Date/15.9.5.10-1: PASS || FAIL
+ecma/Date/15.9.5.10-2: PASS || TIMEOUT if ($arch == arm && $mode == debug)
 ecma/Date/15.9.5.12-1: PASS || FAIL
 ecma/Date/15.9.5.14: PASS || FAIL
 ecma/Date/15.9.5.34-1: PASS || FAIL