[geary] Add Language headers to po files

[Piotr Drąg <piotrdrag src gnome org>]

commit bcfb0716d50342b47f99c4bf10c729133f684b07
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Sat Jul 16 20:21:20 2016 +0200

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

 po/hi.po       |    2 +-
 po/hu.po       |    3 +--
 po/ja.po       |    2 +-
 po/km.po       |    2 +-
 po/ms.po       |    2 +-
 po/nl.po       |    2 +-
 po/sl.po       |    2 +-
 po/sr latin po |    2 +-
 8 files changed, 8 insertions(+), 9 deletions(-)
---
diff --git a/po/hi.po b/po/hi.po
index 33de37d..dd90e15 100644
--- a/po/hi.po
+++ b/po/hi.po
@@ -14,7 +14,7 @@ msgstr ""
 "Last-Translator: yorbajim <jim yorba org>\n"
 "Language-Team: Hindi (India) (http://www.transifex.com/projects/p/geary/";
 "language/hi_IN/)\n"
-"Language: hi_IN\n"
+"Language: hi\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff --git a/po/hu.po b/po/hu.po
index 7d740fe..dbdcfb7 100644
--- a/po/hu.po
+++ b/po/hu.po
@@ -15,11 +15,10 @@ msgstr ""
 "PO-Revision-Date: 2015-06-23 00:19+0200\n"
 "Last-Translator: Balázs Úr <urbalazs gmail com>\n"
 "Language-Team: Hungarian <openscope at googlegroups dot com>\n"
-"Language: hu_HU\n"
+"Language: hu\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"geary/language/hu_HU/)\n"
 "Plural-Forms: nplurals=2; plural=(n != 1);\n"
 "X-Generator: Lokalize 1.2\n"
 
diff --git a/po/ja.po b/po/ja.po
index 56bf1e7..b16c361 100644
--- a/po/ja.po
+++ b/po/ja.po
@@ -15,7 +15,7 @@ msgstr ""
 "Last-Translator: yorbajim <jim yorba org>\n"
 "Language-Team: Japanese (Japan) (http://www.transifex.com/projects/p/geary/";
 "language/ja_JP/)\n"
-"Language: ja_JP\n"
+"Language: ja\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff --git a/po/km.po b/po/km.po
index 043ed02..1bce016 100644
--- a/po/km.po
+++ b/po/km.po
@@ -14,7 +14,7 @@ msgstr ""
 "Last-Translator: yorbajim <jim yorba org>\n"
 "Language-Team: Khmer (Cambodia) (http://www.transifex.com/projects/p/geary/";
 "language/km_KH/)\n"
-"Language: km_KH\n"
+"Language: km\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff --git a/po/ms.po b/po/ms.po
index 61d5bb4..977ba74 100644
--- a/po/ms.po
+++ b/po/ms.po
@@ -14,7 +14,7 @@ msgstr ""
 "Last-Translator: abuyop <abuyop gmail com>\n"
 "Language-Team: Malay (Malaysia) (http://www.transifex.com/projects/p/geary/";
 "language/ms_MY/)\n"
-"Language: ms_MY\n"
+"Language: ms\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff --git a/po/nl.po b/po/nl.po
index 4d2ea76..29fb2da 100644
--- a/po/nl.po
+++ b/po/nl.po
@@ -22,7 +22,7 @@ msgstr ""
 "Last-Translator: Hannie Dumoleyn <hannie ubuntu-nl org>\n"
 "Language-Team: Dutch <vertaling vrijschrift org>\n"
 "geary/language/nl_NL/)\n"
-"Language: nl_NL\n"
+"Language: nl\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 01e8bb9..d56374e 100644
--- a/po/sl.po
+++ b/po/sl.po
@@ -14,7 +14,7 @@ msgstr ""
 "PO-Revision-Date: 2014-03-22 08:45+0100\n"
 "Last-Translator: Matej Urbančič <mateju svn gnome org>\n"
 "Language-Team: Slovenian GNOME Translation Team <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 3e3a146..a958f3d 100644
--- a/po/sr latin po
+++ b/po/sr latin po
@@ -15,7 +15,7 @@ msgstr ""
 "PO-Revision-Date: 2016-05-11 10:06+0200\n"
 "Last-Translator: Miloš Popović <gpopac gmail com>\n"
 "Language-Team: srpski <gnome-sr googlegroups 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"