Make d8-os test less flaky.

Make d8-os test less flaky.

Because of stress testing there may be parallel instances of the test
running, which makes it fail when using a hardcoded test dir
name. Adding a random suffix helps. It'd be nicer to add something
like pid, but there doesn't seem to be an easy way of getting it.

R=yangguo@chromium.org

Committed: http://code.google.com/p/v8/source/detail?r=8848

[Yang, 2011-08-05 12:57:13]

On 2011/08/05 12:41:01, Vitaly Repeshko wrote:

LGTM.

You may want to delete the last 4 lines in test/mjsunit/mjsunit.status though,
since this patch basically fixes that issue. Then again you may also want to
increase the random number range? If it is ran in parallel when testing
isolates, they will definitely run concurrently, and 1/65535 may still be a too
big chance?