hg: lambda/lambda/jdk: Modify the conc-Node spliterator forEach and tryAdvance from using the call

[paul.sandoz at oracle.com]

Changeset: 66c0dd07e288
Author:    psandoz
Date:      2013-02-18 15:09 +0100
URL:       http://hg.openjdk.java.net/lambda/lambda/jdk/rev/66c0dd07e288

Modify the conc-Node spliterator forEach and tryAdvance from using the call
stack to using an explicit (Deque) stack and a depth first search to
find leaf nodes. This avoids stack overflow expceptions with tryAdvance
and forEach for right-balanced or degenerate treess. This also avoids
the internal creation of n spliterators when using tryAdvance, where n is the
depth of the tree.

! src/share/classes/java/util/stream/Nodes.java