hg: jdk/sandbox: 8203670: unmodifiable List iterator() implementations should not be ListIterators

[chris.hegarty at oracle.com]

Changeset: 6ff774d73176
Author:    smarks
Date:      2018-06-26 19:45 -0700
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/6ff774d73176

8203670: unmodifiable List iterator() implementations should not be ListIterators
Reviewed-by: redestad, igerasim, plevart

! src/java.base/share/classes/java/util/ImmutableCollections.java
! test/jdk/java/util/List/ListFactories.java