PIG-3581: Incorrect scope resolution with nested foreach (aniket486)

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1545789 13f79535-47bb-0310-9956-ffa450edef68
PIG-3567: LogicalPlanPrinter throws OOM for large scripts (aniket486)

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1545813 13f79535-47bb-0310-9956-ffa450edef68