changelogs for .texi files

[Doug Evans]

Ben Elliston writes:
 >    I believe the GNU coding standards say .texi files generally don't
 >    need changelog entries (and I like it that way) so when you bump into
 >    it, fyi, I removed your last changelog entry.
 > 
 > Yes, fair enough -- although I am inclined to disagree if they are large
 > changes like adding a whole new section or chapter.  What do you think about
 > logging large-scale changes?

Well, I guess I don't see the need or how such changes would be used.
But I guess go ahead if you feel they're useful.