bug#29178: Failure to build automake > 11

[carl hansen]

>
> Ah, that looks like it could be the culprit:
>
> ig25@linux-d6cw:~/Downloads/automake-1.15> t/wrap/automake-1.15 --help
> Unescaped left brace in regex is illegal here in regex; marked by <-- HERE
> in m/\${ <-- HERE ([^ \t=:+{}]+)}/ at
> /home/ig25/Downloads/automake-1.15/bin/automake line 3936.
> Compilation failed in require at t/wrap/automake-1.15 line 27.
>
>
That's fixed in automake 1.15.1 you seem to be using 1.15