Thanks, I installed the attached patch into Emacs master.  It's the same 
as your patch, but with the ChangeLogs redone to match our current 
style.  (Admittedly our current ChangeLog style is complex; on my list 
of things to do is simplify this; please see <http://bugs.gnu.org/19113>.)

This patch is small enough that it can be installed as a tiny change 
without copyright papers (and that's why it's marked "(tiny change)" in 
the attached patch).  If you would like to get more changes installed in 
the future, would you be willing to jump through the copyright-paperwork 
hoops?  If so, please reply privately and I'll send you the info needed 
to get the ball rolling on that.