Strip all author tags from java files

Asked by Mark. Took me a while to accept it, but it's true that we need to do it.

The author tags in the java files are a maintenance nightmare:

• A large percentage is wrong, incomplete or inaccurate.
• Most of the time, it only contains the original author. Many files are completely refactored/expanded by other authors.
• Git is accurate, that is the canonical source to find the correct author.
• To find the correct author of a piece of code, you always have to double check with git, you cannot suppose the author on the author tag alone.
• Author tags promote "code ownership", which is bad in the long run.
• If people work on a piece they perceive as being owned by someone else, they tend to:
  • only fix what they are assigned to fix, not everything that's broken.
  • discard responsibility if that code doesn't work properly.
  • be scared of stepping of the feet of the owner
  • Instead of "code ownership", we need "module leadership" and "peer reviews".
• More info: How to get a healthy open source project? http://video.google.com/videoplay?docid=-4216011961522818645#

Credit to the author of peices of code is given:

• on the team page: http://www.jboss.org/drools/team
  • Please contact Geoffrey (or any of us) if you want to change/expand your entry in the team page. Don't be shy!
• on the blog: http://blog.athico.com
  • Just ask write permission if you don't have them and want to write an article.
• with ohloh: https://www.ohloh.net/p/jboss-drools/contributors
• in the github web interface