[glabels] Add Language headers to po files

[Piotr Drąg <piotrdrag src gnome org>]

commit 0ce9490012341823c3d29b6150e8e31e1aaab369
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Sun Jul 17 16:56:25 2016 +0200

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

 po/ar.po          |    2 +-
 po/ca.po          |    1 +
 po/ca valencia po |    1 +
 po/eo.po          |    1 +
 po/es.po          |    2 +-
 po/it.po          |    1 +
 po/ko.po          |    1 +
 po/sl.po          |    2 +-
 po/sr latin po    |    2 +-
 po/zh_CN.po       |    2 +-
 po/zh_HK.po       |    2 +-
 po/zh_TW.po       |    2 +-
 12 files changed, 12 insertions(+), 7 deletions(-)
---
diff --git a/po/ar.po b/po/ar.po
index 23639d6..ea885ea 100644
--- a/po/ar.po
+++ b/po/ar.po
@@ -11,7 +11,7 @@ msgstr ""
 "PO-Revision-Date: 2012-08-12 23:49+0300\n"
 "Last-Translator: red sea <a a com>\n"
 "Language-Team: linuxac <dr hatim hotmail com>\n"
-"Language: \n"
+"Language: ar\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff --git a/po/ca.po b/po/ca.po
index ddfb01e..d54e065 100644
--- a/po/ca.po
+++ b/po/ca.po
@@ -12,6 +12,7 @@ msgstr ""
 "PO-Revision-Date: 2009-02-08 22:00+0100\n"
 "Last-Translator: David Planella <david planella gmail com>\n"
 "Language-Team: Catalan <tradgnome softcatala org>\n"
+"Language: ca\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff --git a/po/ca valencia po b/po/ca valencia po
index 94d1967..a018314 100644
--- a/po/ca valencia po
+++ b/po/ca valencia po
@@ -12,6 +12,7 @@ msgstr ""
 "PO-Revision-Date: 2009-02-08 22:00+0100\n"
 "Last-Translator: David Planella <david planella gmail com>\n"
 "Language-Team: Catalan <tradgnome softcatala org>\n"
+"Language: ca@valencia\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff --git a/po/eo.po b/po/eo.po
index db261c8..c1814a1 100644
--- a/po/eo.po
+++ b/po/eo.po
@@ -13,6 +13,7 @@ msgstr ""
 "PO-Revision-Date: 2011-11-10 21:04+0100\n"
 "Last-Translator: Kristjan SCHMIDT <kristjan schmidt googlemail com>\n"
 "Language-Team: Esperanto <gnome-l10n-eo lists launchpad net>\n"
+"Language: eo\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bits\n"
diff --git a/po/es.po b/po/es.po
index 48c64f2..1ca2afb 100644
--- a/po/es.po
+++ b/po/es.po
@@ -11,7 +11,7 @@ msgstr ""
 "PO-Revision-Date: 2016-04-28 13:24+0200\n"
 "Last-Translator: Daniel Mustieles <daniel mustieles gmail com>\n"
 "Language-Team: Español; Castellano <gnome-es-list gnome org>\n"
-"Language: \n"
+"Language: es\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff --git a/po/it.po b/po/it.po
index 6fe4f28..ab6e7da 100644
--- a/po/it.po
+++ b/po/it.po
@@ -14,6 +14,7 @@ msgstr ""
 "PO-Revision-Date: 2005-06-27 09:34+0200\n"
 "Last-Translator: Daniele Medri <daniele medri libero it>\n"
 "Language-Team: Italian <it li org>\n"
+"Language: it\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff --git a/po/ko.po b/po/ko.po
index fb7feca..d01c159 100644
--- a/po/ko.po
+++ b/po/ko.po
@@ -9,6 +9,7 @@ msgstr ""
 "PO-Revision-Date: 2008-02-26 10:59+0900\n"
 "Last-Translator: YunSeok Choi <xein naver com>\n"
 "Language-Team: none\n"
+"Language: ko\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff --git a/po/sl.po b/po/sl.po
index 08693d0..1c971ec 100644
--- a/po/sl.po
+++ b/po/sl.po
@@ -13,7 +13,7 @@ msgstr ""
 "PO-Revision-Date: 2014-02-28 22:49+0100\n"
 "Last-Translator: Matej Urbančič <mateju svn gnome org>\n"
 "Language-Team: Slovenščina <gnome-si googlegroups com>\n"
-"Language: sl_SI\n"
+"Language: sl\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff --git a/po/sr latin po b/po/sr latin po
index 50697c5..9b9720e 100644
--- a/po/sr latin po
+++ b/po/sr latin po
@@ -11,7 +11,7 @@ msgstr ""
 "PO-Revision-Date: 2016-04-11 18:48+0200\n"
 "Last-Translator: Miroslav Nikolić <miroslavnikolic rocketmail 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/zh_CN.po b/po/zh_CN.po
index 7294d4c..6566649 100644
--- a/po/zh_CN.po
+++ b/po/zh_CN.po
@@ -12,7 +12,7 @@ msgstr ""
 "PO-Revision-Date: 2011-05-23 20:33+0800\n"
 "Last-Translator: YunQiang Su <wzssyqa gmail com>\n"
 "Language-Team: Chinese (simplified) <i18n-zh googlegroups com>\n"
-"Language: \n"
+"Language: zh_CN\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bits\n"
diff --git a/po/zh_HK.po b/po/zh_HK.po
index aece9e3..54ba349 100644
--- a/po/zh_HK.po
+++ b/po/zh_HK.po
@@ -11,7 +11,7 @@ msgstr ""
 "PO-Revision-Date: 2015-01-17 08:28+0800\n"
 "Last-Translator: Walter Cheuk <wwycheuk gmail com>\n"
 "Language-Team: Chinese (Hong Kong) <community linuxhall org>\n"
-"Language: \n"
+"Language: zh_HK\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff --git a/po/zh_TW.po b/po/zh_TW.po
index 9265acf..3e0911b 100644
--- a/po/zh_TW.po
+++ b/po/zh_TW.po
@@ -11,7 +11,7 @@ msgstr ""
 "PO-Revision-Date: 2015-01-17 18:30+0800\n"
 "Last-Translator: Walter Cheuk <wwycheuk gmail com>\n"
 "Language-Team: zh-l10n <zh-l10n linux org tw>\n"
-"Language: \n"
+"Language: zh_TW\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"