We add the lists of system packages providing polymake's Perl prerequisites
so that ./configure will include them in the list of suggested packages.

At least for the distributions that provide these packages, this is more reliable than depending on users reading build/pkgs/polymake/SPKG.txt.

This is achieved by adding them in distros/ of a new script package perl_cpan_polymake_prereq (a new dependency of polymake) with an spkg-configure.m4 that checks for the prerequisites and an spkg-install that always fails.

(See also the more ambitious #27763, which will not be ready for 9.1.)

CC: @dimpase @jhpalmieri @jplab @antonio-rojas @isuruf @videlec

Component: packages: experimental

Author: Matthias Koeppe

Branch/Commit: 9de4708

Reviewer: Dima Pasechnik

Issue created by migration from https://trac.sagemath.org/ticket/29054