[8u20] RFATB JDK-8042355: stream with sorted() causes downstream ops not to be lazy

[Paul Sandoz]

Hi,

  https://bugs.openjdk.java.net/browse/JDK-8042355
  http://mail.openjdk.java.net/pipermail/core-libs-dev/2014-May/026741.html
  http://hg.openjdk.java.net/jdk9/dev/jdk/rev/60147ddadf07

The changeset applies cleanly to 8u-dev and stream tests pass locally.

Paul.