RFR 8031187: DoubleStream.count is incorrect for a stream containing > Integer.MAX_VALUE elements

[Paul Sandoz]

Hi,

Please review the following which fixes an embarrassing bug in DoubleStream.count:

  http://cr.openjdk.java.net/~psandoz/jdk9/JDK-8031187-DoubleStream-count/webrev/

I included a test CountLargeTest that counts up to Integer.MAX_VALUE + 1. On my mac book this takes about 27s to run from the jtreg command, on a slow machine it could be longer. I would like to retain this test but it does not need to be run regularly, how can i annotate the test to declare that?

Also, i think this fix should go back to 8. The risk is low.

Thanks,
Paul.