Bug#870821: esys-particle FTBFS with perl 5.26

[Adrian Bunk]

Source: esys-particle
Version: 2.3.5+dfsg1-1
Severity: serious

https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/esys-particle.html

...
./makeglos.pl paper.glo
Unescaped left brace in regex is illegal here in regex; marked by <-- HERE in m/\\newglossarytype\[(.*)\]{ <-- HERE (.*)}{(.*)}{(.*)}/ at ./makeglos.pl line 49.
Makefile:606: recipe for target 'ESyS-Particle_Tutorial.pdf' failed
make[4]: *** [ESyS-Particle_Tutorial.pdf] Error 255