Update release script (its the exact setup for creating the 0.6-incubating release)
Set version of poms to 0.7-incubating-SNAPSHOT ; 0.6-incubating release tasks:
- 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.
[FLINK-993] Release builds and nightly builds now have the same names
Forgot license header (which causes apache-rat to fail the build)
[streaming] CoFlatMap & CoGroupReduce functionality
[streaming] Added database-backed state
[streaming] Memcached, MySQl and SQLite support for state management.
[streaming] Refactored db state connectors and added their license

Conflicts:
	flink-addons/flink-streaming/flink-streaming-connectors/pom.xml
[streaming] Refactored stream components with InputHandler & OutputHandler
[streaming] Minor bug and license header fixes
[streaming] Updated DBStates
[streaming] DataStream merge fix + example clean-up
[streaming] CoRecordReader and iterator added + ConnectedDataStream refactor
[streaming] Examples updated with CoFunctions
[streaming] Added JSONParser and updated Twitter connector
[streaming] WindowJoin Example refactored
[streaming] connectors logging and deploy update
[streaming] reduce operator added to DataStream and ConnectedDataStream + grouped batch and windowReduce operators reworked
[streaming] Moved dependencies to enforce correct policy