[gedit] Add context to open and save window title strings

[Sébastien Wilmet <swilmet src gnome org>]

commit e785a447aede64664e463823028ce84a701693d8
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Fri Sep 25 16:39:23 2015 +0200

    Add context to open and save window title strings
    
    Also adds a comment to "Save As", similar to the one in "Open".

 gedit/gedit-commands-file.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/gedit/gedit-commands-file.c b/gedit/gedit-commands-file.c
index aa0238c..ae668c7 100644
--- a/gedit/gedit-commands-file.c
+++ b/gedit/gedit-commands-file.c
@@ -453,7 +453,7 @@ _gedit_cmd_file_open (GSimpleAction *action,
        }
 
        /* Translators: "Open" is the title of the file chooser window. */
-       open_dialog = gedit_file_chooser_dialog_create (_("Open"),
+       open_dialog = gedit_file_chooser_dialog_create (C_("window title", "Open"),
                                                        window != NULL ? GTK_WINDOW (window) : NULL,
                                                        GEDIT_FILE_CHOOSER_OPEN |
                                                        GEDIT_FILE_CHOOSER_ENABLE_ENCODING |
@@ -843,7 +843,8 @@ save_as_tab_async (GeditTab            *tab,
        task = g_task_new (tab, cancellable, callback, user_data);
        g_task_set_task_data (task, g_object_ref (window), g_object_unref);
 
-       save_dialog = gedit_file_chooser_dialog_create (_("Save As"),
+       /* Translators: "Save As" is the title of the file chooser window. */
+       save_dialog = gedit_file_chooser_dialog_create (C_("window title", "Save As"),
                                                        GTK_WINDOW (window),
                                                        GEDIT_FILE_CHOOSER_SAVE |
                                                        GEDIT_FILE_CHOOSER_ENABLE_ENCODING |