File reproducible.patch of Package colobot-data

https://github.com/colobot/colobot-data/pull/41

From 01354acabe1f0bcd7968bab2f9d55596ab21fd51 Mon Sep 17 00:00:00 2001
From: "Bernhard M. Wiedemann" <bwiedemann@suse.de>
Date: Thu, 11 Jul 2019 06:47:28 +0200
Subject: [PATCH] Sort input file list

so that chaptertitle.txt builds in a reproducible way
in spite of indeterministic filesystem readdir order

See https://reproducible-builds.org/ for why this is good.
---
 i18n-tools/scripts/common.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/i18n-tools/scripts/common.py b/i18n-tools/scripts/common.py
index 80423f3c..c0488bad 100644
--- a/i18n-tools/scripts/common.py
+++ b/i18n-tools/scripts/common.py
@@ -150,7 +150,7 @@ def merge_and_save(self, template_file):
 def find_translation_file_names(po_dir):
     pot_file_name = os.path.join(po_dir, 'translations.pot') # default
     po_file_names = []
-    for file_name in os.listdir(po_dir):
+    for file_name in sorted(os.listdir(po_dir)):
         if file_name.endswith('.pot'):
             pot_file_name = os.path.join(po_dir, file_name)
         elif file_name.endswith('.po'):