consider split up of NOTICE in binary artifact

[pjfanning]

https://dist.apache.org/repos/dist/dev/incubator/ozhera/2.2.5-incubating-rc5/
apache-ozhera-2.2.5-incubating-bin.tar.gz

• The NOTICE is long and hard to navigate.
• It would probably be easier if the NOTICE had the basic Apache copyright and mentioned that a notices folder exists
• the notices folder would contain many separate notice files
• in some cases, where we have multiple 3rd jars that have the same notice then we can just have 1 notice file that mentions all the jars that share the notice (all the poi jars for instance)

[gaoxh]

Thank you for your solution, it's a good idea. In the next version, we will improve the notice to make it easier to browse.