Remove leftover logback-test.xml in flink-java8.tests
Point quickstart scripts to 0.6.1-incubating
Change logging backend of SLF4j from Logback to Log4j for better compatibiltiy with YARN.
We'll still ship the Logback configuration file and pass them their path to the JVM so that
users can use Flink with Logback as well.

This closes #125
Removed slf4j-simple dependency from streaming component.
Fix Bug in ScalaAggregate Operator and add ITCase
Change Partition Operator to actual general-purpose Operator

It is no longer a special-case operator that can only be used in front
of map-style operations.
[FLINK-1123] Add first-n to Scala API
[FLINK-1120] Add Explicit Partition/Rebalance Operator for Scala API
Update doc with Scala First-N and Partition/Rebalance
Added TPCH query examples for Scala API
Improved Java TPCH query examples
Removed RelationalQuery Java API example
[FLINK-1005] Extend TypeSerializer interface to handle non-mutable object deserialization more efficiently.
[FLINK-1005] Add non-object reusing variants of key-grouped iterator.

Clean minor javadoc errors.
[FLINK-1005] Make GroupReduce configurable to use either mutable or immutable object mode
RAT plugin not inhertited, to prevent redundant checks.
[FLINK-1072] improved build matrix
add shading for guava
Major depedendency cleanups
  - add "flink-shading" for shaded libraries (currently guava only)
  - relocate guava in all projects and exclude it from the lib and exported dependencies
  - Exlude unnecessary transitive dependencies from hadoop 1
Deactivate shade plugin for quickstart projects
[FLINK-1117] Clean up flink-avro project: remove deprecated AvroRecord format, migrate tests to new java api.
- Allow dependencies to retain guava
- Clean dependencies in flink-streaming connectors