Currently, on fedora-31-standard we do not find a system package that passes the python3 spkg-configure test (https://github.com/mkoeppe/sage/runs/563300830).

In this ticket, we add the needed system packages to build/pkgs/python3/distros/fedora.txt.

Also, for uniformity, we move some system packages from build/pkgs/cygwin.txt to build/pkgs/python3/distros/cygwin.txt so that they are only available in a standard build but not a minimal build.

We also add the system package information for python3 for some more distributions in preparation for supporting them.

Using system python3 on fedora leads to a compilation error with cysignals, which we work around.

Upstream: Reported upstream. No feedback yet.

CC: @dimpase @kiwifb

Component: porting

Author: Matthias Koeppe

Branch/Commit: 385e7db

Reviewer: Dima Pasechnik

Issue created by migration from https://trac.sagemath.org/ticket/29473