[Runtime] [Tests] Remove flaky check in LocalInstanceManagerTest
[Distributed runtime] Fail task if execution state update is unsuccessful
[Java API] Fix equality checks on PojoTypeInfo
[APIs] Add ExecutionConfig
[FLINK-1325] [Java API] Add Java ClosureCleaner

This closes #269
[FLINK-1325] [Java API] Minor cleanups on the ClosureCleaner
Bump version to 0.9-incubating-SNAPSHOT
[FLINK-1137] Enhance MutableObjectIterator with non-reuse next()

This is in preparation for configurable object-reuse mode. We previously
referred to this as mutable object vs. mutable object safe mode or some
such thing.
[FLINK-1285] Make execution mode configurable
Enable FastPath in TextValueInputFormat again
[FLINK-1285] Make Merge-Join aware of object-reuse setting
Enable Object Reuse in WordCount Example
Add WordCountWithValue

Add Readonly Job for Testing

Add TPCH-3 WIth Value

Enable Object Reuse in TPCH3 for experiments

Fix WC and WCWithValue for object reuse bmark

Disable Validate in StringValue, output fastpath
Fix StringValue bug