RFR: 8154387 - Parallel unordered Stream.limit() tries to collect 128 elements even if limit is less

[Tagir F. Valeev]

Hello!

PS> Thinking some more about this, i think it would be preferable. It
PS> reduces the explicit referral to
PS> ForkJoinPool.getCommonPoolParallelism().

No problems, here's updated webrev:
http://cr.openjdk.java.net/~tvaleev/webrev/8154387/r2/
All tests pass.

With best regards,
Tagir Valeev.