Emacs master ChangeLog files now generated automatically

[Paul Eggert]

I installed the recently-discussed procedure for generating ChangeLog files 
automatically from commit messages.  When you do a 'git pull' next, expect to 
see many ChangeLog files renamed to ChangeLog.12 or whatever.  From now on, 
ordinary commits should not need to edit ChangeLog files; instead, they should 
merely have commit messages that look like entries in a top-level ChangeLog file 
(a file that is generated automatically, and is not stored in the repository).

I installed this change on Emacs's master branch; other branches can incorporate 
the change as needed.

For more, please see the file 'CONTRIBUTING' on the master branch, or see 
Bug#19113, or see my week-ago email on the topic, here:

https://lists.gnu.org/archive/html/emacs-devel/2015-03/msg01045.html