Made exceptions for license check plugin more fine-granular.

This closes #250

This closes #232

This closes #217

[FLINK-1203] Use forked execution in all tests, except in the end-to-end integration tests in flink-tests

This closes #174

- Clean dependencies in flink-streaming connectors

  - 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

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

Checking for Java support

Small changes and meaningful exception for unsupported compilers

pom.xml modified to use JDT compiler

Project structure refactored, examples added

Documentation added

Quickstart adapted

[FLINK-1114] Move scala-style checks to scala projects, change paths to style conifg, to allow isolated building of individual projects.

I excluded all slf4j-log4j12 transitive dependencies to get rid off the warning that slf4j finds multiple slf4j bindings in the classpath. Additionally, I added log4j-over-slf4j and excluded all log4j transitive dependencies so that slf4j handles also legacy log4j logging messages from dependencies.

Author: Till Rohrmann <trohrmann@apache.org>

Closes #121 from tillrohrmann/FLINK-1097 and squashes the following commits:

b9f76d5 [Till Rohrmann] Excluded slf4j-log4j12 as transitive dependency in order to not have multiple slf4j bindings in the class path. Added log4j-overslf4j and excluded log4j transitive dependencies to collect log4j outputs.

- Excluded Kafka's transitive dependencies: jmxtools and jmxri
- Corrected encoder pattern in logback.xml
- Removed explicit logging access. Loggers are now configured by
  configuration files. Fixed Yarn issue with multiple logging
  bindings.

This closes #111.

Users using CDH4 can now build Flink against Hadoop 2.0.0-alpha.

- update _config.yaml of integrated documentation
- quick check on the quickstarts / build instructions to match the latest release
- quickstart.sh scrips now point to the correct versions.

This closes #72

This uses the forkCount parameter of surefire/failsafe. This also
changes the JVM memory size for the testing VMs so that more can fit
into memory.

For this to work, NepheleMiniCluster must recognize when it is run in
a parallel testing environment and change ports accordingly. Also
AbstractTestBase and TaskTestBase must prefix temp files with the class
name to prevent name clashes.

This closes #96

- remove usages of commons-lang (we use only commons-lang3, as defined in flink-runtime/pom.xml)
- Upgrade maven failsafe to 2.17 so that tests also fail if the test errors (exceptions during execution)
- added new build profile "docs-and-source" that creates javadocs and source attachments. These are usually only needed when releasing (--> speed up the build)

- Upgraded to junit 4.11 and fixed code that used deprecated
- Changed scala dependency from 2.10.3 to 2.10.4 to avoid conflicts with scalatest dependency
- Upgraded log4j and commons-logging dependency
- Removed superfluous dependency on commons-codec
- Upgraded dependency versions in the base module
- Ensured consistency of avro versions across submodules
- Upgraded AWS dependency to version 1.8.1
- Unified configuration of jetty dependency

This closes #80.

This closes #62