Alow long running test to time out on ARM

This test have been timing out on ARM hardware from time to time.
Review URL: http://codereview.chromium.org/543206

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@3710 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

test/mjsunit/mjsunit.status

@@ -45,8 +45,8 @@ array-constructor: PASS || TIMEOUT
 # Very slow on ARM, contains no architecture dependent code.
 unicode-case-overoptimization: PASS, TIMEOUT if ($arch == arm)
 
-# Skip long running test in debug.
-regress/regress-524: PASS, SKIP if $mode == debug
+# Skip long running test in debug and allow it to timeout in release mode.
+regress/regress-524: (PASS || TIMEOUT), SKIP if $mode == debug
 
 [ $arch == arm ]