bug#26761: 25.1; Emacs freezes when scrolling with mouse wheel

[npostavs]

> From: Christoph Groth <christoph@grothesque.org>

> So it seems that either the problem got fixed, or it is a problem 
> that is introduced through Debian packaging.  In order to find out 
> who is the culprit I checked out the tag emacs-24.5 from git and 
> tried to compile, but there's a problem.  Running "./autoconf.sh" 
> gives:

Is "./autoconf.sh" a typo for "./autogen.sh"?

> Running 'autoreconf -fi -I m4' ...
> /usr/bin/m4:aclocal.m4:9: cannot open `m4/count-leading-zeros.m4': 
> No such file or directory

Try deleting 'aclocal.m4' first.