PIG-3148: OutOfMemory exception while spilling stale DefaultDataBag. Extra option to gc() before spilling large bag. (knoguchi via rohini)

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1452226 13f79535-47bb-0310-9956-ffa450edef68
PIG-3144: Erroneous map entry alias resolution leading to "Duplicate schema alias" errors (jcoveney via cheolsoo)


git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1452460 13f79535-47bb-0310-9956-ffa450edef68
PIG-2988: start deploying pigunit maven artifact part of Pig release process (njw45 via rohini)

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1452778 13f79535-47bb-0310-9956-ffa450edef68
PIG-3081: Pig progress stays at 0% for the first job in hadoop 23 (rohini)

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1452782 13f79535-47bb-0310-9956-ffa450edef68
PIG-3136: Introduce a syntax making declared aliases optional (jcoveney via cheolsoo)


git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1452909 13f79535-47bb-0310-9956-ffa450edef68
PIG-3211: Allow default Load/Store funcs to be configurable (prkommireddi via cheolsoo)


git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1452913 13f79535-47bb-0310-9956-ffa450edef68
Merge remote-tracking branch 'remotes/apache/trunk' into trunk
Fixes a minor issue