merged with trunk; blocks for trident execution engine
added Tap operator for listening to stream sources
added visitor for walking the logical plan and creating stream operators
made a StreamSource operator and added a LocalFileTap for debugging
spout now takes the parallelism hint given by the script
pivoting and using some physical operators for now; in fact, shouldnt these physical operators be pulled somewhere outside the hadoop namespace?
cogroup operator works; uses similar mechanism to POPackage (which is too complicated and tied to hadoop to use)
utility class for creating pig tuples from trident tuples
sinkfunc et al for storing state, still need to add an actual pig operator
another giant code bolus, got sink operator working, localfilesink as poc, other fixes to carry schema forward
Merge branch 'trunk' of git://git.apache.org/pig into storm-integration
ivy so as to compile properly
making build configuration as sane as I can come up with; apache license everything
merge properties
PIG-3522: Remove shock from pig

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1538093 13f79535-47bb-0310-9956-ffa450edef68
PIG-3559: Trunk is broken by PIG-3522 (cheolsoo)


git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1538250 13f79535-47bb-0310-9956-ffa450edef68
Merge branch 'trunk' of https://github.com/apache/pig into storm-integration
updated executionengine to handle interface update
PIG-3388: No support for Regex for row filter in
org.apache.pig.backend.hadoop.hbase.HBaseStorage (lbendig via cheolsoo)


git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1540450 13f79535-47bb-0310-9956-ffa450edef68
PIG-3553: HadoopJobHistoryLoader fails to load job history on hadoop v 1.2 (lgiri via cheolsoo)


git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1540451 13f79535-47bb-0310-9956-ffa450edef68