bug#19562: issues introduced since 2014-10-20

[Drew Adams]

>  > (FWIW: I'm reporting this for a build from 2014-10-20 because I have
>  > not found a more recent build that I can use at all – too many things
>  > broken.)
> 
>       Do you care to list the respective bug reports?  No promises,
>       but I hope to at least take a look at them.  (And should the
>       problem be that no one has bothered to check the proposed
>       patches and push them to Git, – I now can do it myself.)

Sorry, I have not (yet) filed any bug report about this.  I hope to,
when I have time to narrow things down a bit.

One thing I can say (which doesn't mean much out of context, which
is why I want to narrow things down) is that thumbifying frames
(shrinking them quite a bit, by reducing the font size) now shows
them with the wrong height, a height much larger (several times
larger) than what it should be.

I probably should have been clearer and less alarmist in that
parenthetical remark, BTW.  The Emacs builds since 10/20 are not
really usable by me, in my context.  But that does not mean that
the problems make it unusable for others.  I should have made that
clear.

Anyway, I will try to find time to narrow things down and report
bugs that I see properly.  And thanks for following up and offering
to look into this.