PIG-3627: Json storage : Doesn't work in cases , where other Store Functions (like PigStorage / AvroStorage) do work

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1565738 13f79535-47bb-0310-9956-ffa450edef68
PIG-3447: Compiler warning message dropped for CastLineageSetter and others with no enum kind (knoguchi via cheolsoo)


git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1565916 13f79535-47bb-0310-9956-ffa450edef68