cython3

cython3

https://github.com/seccomp/libseccomp/pull/188

From 8d09eb9314ad00aa0584345ae66d4419b38da8e0 Mon Sep 17 00:00:00 2001
From: Paul Moore <paul@paul-moore.com>
Date: Wed, 13 Nov 2019 20:54:25 -0500
Subject: [PATCH] build: try to use explicitly marked Python 3.x tools first

Python 2.x is going EOL very soon, so let's require Python 3.x now
and attempt to use the explicitly marked Python 3.x tools first.

Signed-off-by: Paul Moore <paul@paul-moore.com>
Gbp-Pq: Name cython3.patch