8025067: Unconditionally throw NPE if null op provided to Arrays.parallelPrefix Reviewed-by: henryjen, chegar, psandoz

7057785: Add note about optional support of recursive methods for self-referential Collection/Map Reviewed-by: scolebourne, darcy, mduigou Contributed-by: Stephen Colebourne <scolebourne@joda.org>

8024707: TransformerException : item() return null with node list of length != 1 Reviewed-by: joehw, lancea

8024408: Specifications for Collection/List/Set/SortedSet.spliterator() need to document if all the (subclass) instances are required to return SIZED spliterators Reviewed-by: alanb