PIG-3304: XMLLoader in piggybank does not work with inline closed tags

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1478242 13f79535-47bb-0310-9956-ffa450edef68
PIG-2970: Nested foreach getting incorrect schema when having unrelated inner query

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1478243 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk