* Better explanation of commit message vs ChangeLog distinction.
* Fix the name of the ChangeLog make task.
* Make instructions WRT NEWS, etc, ChangeLog entries clearer.
Fixes: debbugs:20328
* .gitignore: Add 'ChangeLog'.
* build-aux/gitlog-to-changelog: New file, from Gnulib.
* build-aux/gitlog-to-emacslog: New file.
* CONTRIBUTE: Document the revised workflow.
* Makefile.in (clean): Remove *.tmp and etc/*.tmp*
instead of just special cases.
(CHANGELOG_HISTORY_INDEX_MAX, CHANGELOG_N, gen_origin): New vars.
(ChangeLog, unchanged-history-files, change-history)
(change-history-commit): New rules.
* admin/admin.el (make-manuals-dist--1):
Don't worry about doc/ChangeLog.
* admin/authors.el: Add a FIXME.
* admin/make-tarball.txt:
* lisp/calendar/icalendar.el:
* lisp/gnus/deuglify.el:
* lisp/obsolete/gulp.el:
* lwlib/README:
Adjust to renamed ChangeLog history files.
* admin/merge-gnulib (GNULIB_MODULES): Add gitlog-to-changelog.
* admin/notes/repo: Call it 'master' a la Git, not 'trunk' a la Bzr.
Remove obsolete discussion of merging ChangeLog files.
New section "Maintaining ChangeLog history".
* build-aux/git-hooks/pre-commit:
Reject attempts to commit files named 'ChangeLog'.
* lib/gnulib.mk, m4/gnulib-comp.m4: Regenerate.
* make-dist: Make and distribute top-level ChangeLog if there's a
.git directory. Distribute the new ChangeLog history files
instead of scattered ChangeLog files. Distribute the new files
gitlog-to-changelog and gitlog-to-emacslog.
Fixes: bug#19113
Fixes bug#19299
* CONTRIBUTE: Move user-level information to doc/emacs/trouble.texi
(commit messages): new, gathered from comments on emacs-devel
(Changelog notes): add reference to GNU coding standards section 5.2;
doc 'present tense', bug fix format
(branches): freeze announcements are made on info-gnu-emacs mailing
list
(git vs rename): new
* doc/emacs/trouble.texi: Move user-level information from CONTRIBUTE here
* lisp/startup.el (fancy-about-text): change buttons for etc/CONTRIBUTE
to (info "(emacs)Contributing")
* CONTRIBUTE: improve; add explicit web references, move some info from
admin/notes/* here.
* INSTALL.REPO: You can't "just run make" after a clean checkout.
* admin/notes/commits: deleted; merged into ./CONTRIBUTE
* admin/notes/repo: move commit, branch info into ./CONTRIBUTE
