Fixes a few minor issues with scripts.
- Add additional information around since it was confusing, and not clear that the number was the ID from github and not just the major version number.
- Fix an issue where the milestone displayed in an output message was the milestone supplied as an argument, instead of the number of the milestone the PR is already tagged against in Github, from the sent request.
* set encoding for license and notice scripts, split generate-license.py into generate-binary-license.py and check-licenses.py, check-licenses when -Papache-release is used
* missing docs
* doc fix
* more doc fix
* remove comments
* good catch travis +1
* fix lgtm alerts
* migrate binary notice entries to live in licenses.yaml, use licenses.yaml and NOTICE to generate NOTICE.BINARY at distribution time
* +x
* move release scripts to distribution/bin, fixup notice script, trim dependencies for avro and kerberos in licenses.yaml
* add missing hdfs-storage dependencies
* revert to old syntax, fixes
* formatting
* update notices for recently updated dependencies