This closes #1091

This also bumps surefire/failsafe version to 2.8.1

This closes #889.

[FLINK-2580] [runtime] Expose more methods form Hadoop output streams and exposes wrapped input and output streams.

This closes #1093

This closes #992.

This closes #1052

- improve test layout

This closes #1073.

[FLINK-2570] [gelly] Added a description of the I/O

This closes #1054

[FLINK-2567] [core] Allow quoted strings in CSV fields to contain quotation character inside of the field, as long as its escaped Ex: 'Hi my name is \'Flink\''

This closes #1059

This closes #1082

This closes #1096

The test is inconclusive when the test failure happens before the first checkpoint.

LocalExecutor and Client now pass Configuration to JobGraphGenerator.

This closes #1095

This closes #1089.

[FLINK-2161] [scala shell] Modify start script to take additional argument (-a <path/to/class> or --addclasspath <path/to/class>) for external libraries

This closes #805

This closes #1074

- call new start() method of FlinkMiniCluster

This closes #1085.

[hotfix] [gelly] Remove unintended calls to getExecutionEnvironment in VertexCentricIteration and GatherSumApplyIteration

This closes #1031

[FLINK-2448] [tests] Create new Test Environments on every call to getExecutionEnvironment and allow sharing of job execution results

This closes #1067

This prevents possible null pointers when the JVM shuts down before the I/O manager was fully started.

* modified algorithm as explained in the issue
* updated method documentation

[FLINK-2590] reducing required bit shift size

* maximum bit size is changed to getNumberOfParallelSubTasks() - 1

This closes #1075.

This closes #1076

This closes #1080

- move createCopySerializable to core's CommonTestUtils
- rename CommonTestUtils createCopy to createCopyWritable
- adapt the tests to use core's CommonTestUtils where applicable

This closes #1081.