[california] Add Language headers to po files

[Piotr Drąg <piotrdrag src gnome org>]

commit 6df029533b32d4e93842793271cbde6cd8238713
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Thu Jul 14 21:00:36 2016 +0200

    Add Language headers to po files
    
    Future versions of gettext will fail if this header is missing.

 po/sr latin po |    2 +-
 po/tr.po       |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/po/sr latin po b/po/sr latin po
index bed1ad1..bcf3f91 100644
--- a/po/sr latin po
+++ b/po/sr latin po
@@ -13,7 +13,7 @@ msgstr ""
 "Last-Translator: Marko M. Kostić (Marko M. Kostić) <marko.m.kostic@gmail."
 "com>\n"
 "Language-Team: Serbian <gnom prevod org>\n"
-"Language: sr\n"
+"Language: sr@latin\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff --git a/po/tr.po b/po/tr.po
index 65f50d8..058e96d 100644
--- a/po/tr.po
+++ b/po/tr.po
@@ -13,7 +13,7 @@ msgstr ""
 "PO-Revision-Date: 2015-12-31 22:40+0200\n"
 "Last-Translator: Muhammet Kara <muhammetk gmail com>\n"
 "Language-Team: Türkçe <gnome-turk gnome org>\n"
-"Language: tr_TR\n"
+"Language: tr\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"