splitting ChangeLogs

[Juanma Barranquero]

src/Changelog is a massive 1.12 MiB, and lisp/ChangeLog a slightly
less impressive 0.86 MiB.

It's OK to split them at the following point?

2010-05-07  Chong Yidong  <address@hidden>

        * Version 23.2 released

If so, which one should keep history, i.e.,

  copy ChangeLog Changelog.11
  ;; edit and trim both files
  bzr add ChangeLog.11
  bzr commit -m "..."

or

  bzr mv ChangeLog ChangeLog.11
  copy ChangeLog.11 ChangeLog
  ;; edit and trim both files
  bzr add ChangeLog
  bzr commit -m "..."

    Juanma