[grilo-plugins] Add Language headers to po files

[Piotr Drąg <piotrdrag src gnome org>]

commit ab584026bac64cd5f46dc7586f8d8346c7f2e787
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Thu Jul 21 22:39:43 2016 +0200

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

 po/ca valencia po |    2 +-
 po/nb.po          |    2 +-
 po/sl.po          |    2 +-
 po/sr latin po    |    2 +-
 po/zh_HK.po       |    2 +-
 5 files changed, 5 insertions(+), 5 deletions(-)
---
diff --git a/po/ca valencia po b/po/ca valencia po
index 275924d..0c0a634 100644
--- a/po/ca valencia po
+++ b/po/ca valencia po
@@ -11,7 +11,7 @@ msgstr ""
 "PO-Revision-Date: 2014-08-16 23:59+0200\n"
 "Last-Translator: Gil Forcada <gilforcada guifi net>\n"
 "Language-Team: Catalan <tradgnome softcatala org>\n"
-"Language: ca-XV\n"
+"Language: ca@valencia\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bits\n"
diff --git a/po/nb.po b/po/nb.po
index 0cfcf8d..8025241 100644
--- a/po/nb.po
+++ b/po/nb.po
@@ -11,7 +11,7 @@ msgstr ""
 "PO-Revision-Date: 2016-01-10 20:04+0100\n"
 "Last-Translator: Kjartan Maraas <kmaraas gnome org>\n"
 "Language-Team: Norwegian bokmål <i18n-nb lister ping uio no>\n"
-"Language: \n"
+"Language: nb\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 522df47..fe8b7fa 100644
--- a/po/sl.po
+++ b/po/sl.po
@@ -13,7 +13,7 @@ msgstr ""
 "PO-Revision-Date: 2016-02-01 21:11+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 64ff84b..7aa4890 100644
--- a/po/sr latin po
+++ b/po/sr latin po
@@ -11,7 +11,7 @@ msgstr ""
 "PO-Revision-Date: 2016-02-18 21:29+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_HK.po b/po/zh_HK.po
index 556ec5a..a2efeae 100644
--- a/po/zh_HK.po
+++ b/po/zh_HK.po
@@ -12,7 +12,7 @@ msgstr ""
 "PO-Revision-Date: 2014-08-21 17:12+0800\n"
 "Last-Translator: Chao-Hsiung Liao <j_h_liau yahoo com tw>\n"
 "Language-Team: Chinese (Hong Kong) <community linuxhall org>\n"
-"Language: zh_TW\n"
+"Language: zh_HK\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"