[tracker] Add more options to XGETTEXT_OPTIONS in po/Makevars

[Piotr Drąg <piotrdrag src gnome org>]

commit f22d3f6eddb62c8f49d066dd797f576fe726a48d
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Mon Sep 12 20:11:24 2016 +0200

    Add more options to XGETTEXT_OPTIONS in po/Makevars

 po/Makevars |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/po/Makevars b/po/Makevars
index 09f994f..2cb0181 100644
--- a/po/Makevars
+++ b/po/Makevars
@@ -2,5 +2,5 @@ subdir = po
 top_builddir = ..
 
 # These options get passed to xgettext.
-XGETTEXT_OPTIONS = --keyword=_ --keyword=N_ --keyword=tracker_dngettext:2,3
+XGETTEXT_OPTIONS = --from-code=UTF-8 --keyword=_ --keyword=N_ --keyword=C_:1c,2 --keyword=NC_:1c,2 
--keyword=tracker_dngettext:2,3 --add-comments