Bug#869580: teg: Local copy of intltool-* fails with perl 5.26

[Adrian Bunk]

Source: teg
Version: 0.11.2+debian-4
Severity: serious
Tags: buster sid

https://tests.reproducible-builds.org/debian/rb-pkg/unstable/arm64/teg

...
Making check in po
make[2]: Entering directory '/build/1st/teg-0.11.2+debian/po'
INTLTOOL_EXTRACT=../intltool-extract srcdir=. ../intltool-update --gettext-package teg --pot
Unescaped left brace in regex is illegal here in regex; marked by <-- HERE in m/^(.*)\${ <-- HERE ?([A-Z_]+)}?(.*)$/ at ../intltool-update line 872.
Makefile:165: recipe for target 'teg.pot' failed
make[2]: *** [teg.pot] Error 2
make[2]: Leaving directory '/build/1st/teg-0.11.2+debian/po'
Makefile:352: recipe for target 'check-recursive' failed
make[1]: *** [check-recursive] Error 1