SubsetSum@Home: One more application update.

It looks like the atol function works correctly on linux, but not on windows. So I've updated the applications one more time and they should now really be correctly validating against each other. They also will probably be running longer now (as they are now correctly parsing the argument which specifies how many sets they examine which basically determines the runtime), so after you've crunched a few let me know if the 60 credit per workunit is still about right, or if it needs to be bumped up a bit.

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