[streaming] Basic support reading from local and distributed file systems in readTextFile methods

Conflicts:
	flink-addons/flink-streaming/flink-streaming-core/src/main/java/org/apache/flink/streaming/api/JobGraphBuilder.java
	flink-addons/flink-streaming/flink-streaming-core/src/main/java/org/apache/flink/streaming/api/environment/StreamExecutionEnvironment.java
[streaming] ReadTextFile re-implemented as RichFunction and cleanup

Conflicts:
	flink-addons/flink-streaming/flink-streaming-core/src/main/java/org/apache/flink/streaming/api/environment/StreamExecutionEnvironment.java
[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
[streaming] DataStream print functionality update

PrintSinkFunction now explicitly states threads in output
Added printToErr functionality
[streaming] [examples] Refactor and packaging for windowing examples

The current examples show-case the API, more meaningful examples are coming for the 0.9 release.
[streaming] Updated deprecated iterative functionality and docs
[FLINK-1325] [streaming] Added clousure cleaning to streaming

This closes #273
Fix invalid type hierarchy creation by Pojo logic
[FLINK-610] Replace Avro by Kryo as the GenericType serializer

The performance of data-intensive jobs using Kryo is probably going to be slow.

Set correct classloader

try to use Kryo.copy() with fallback to serialization copy
[FLINK-1333] Fixed getter/setter recognition for POJOs

This closes #271
Fixes race condition in ExecutionGraph which allowed a job to go into the finished state without all job vertices having properly processed the finalizeOnMaster method.
[FLINK-1336] [core] Fix bug in StringValue binary copy method
[FLINK-1296] [runtime] Add better paged disk I/O readers / writers
[FLINK-1296] [runtime] Add sorter support for very large records