[gnome-software] Make app name sorting case insensitive

[Robert Ancell <rancell src gnome org>]

commit b70b717a1c759bdab2af917c937d08000790d306
Author: Robert Ancell <robert ancell canonical com>
Date:   Fri Feb 16 16:48:07 2018 +1300

    Make app name sorting case insensitive

 lib/gs-plugin-loader.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)
---
diff --git a/lib/gs-plugin-loader.c b/lib/gs-plugin-loader.c
index d82c68ea..7150207d 100644
--- a/lib/gs-plugin-loader.c
+++ b/lib/gs-plugin-loader.c
@@ -256,8 +256,14 @@ G_DEFINE_AUTOPTR_CLEANUP_FUNC(GsPluginLoaderHelper, gs_plugin_loader_helper_free
 static gint
 gs_plugin_loader_app_sort_name_cb (GsApp *app1, GsApp *app2, gpointer user_data)
 {
-       return g_strcmp0 (gs_app_get_name (app1),
-                         gs_app_get_name (app2));
+       g_autofree gchar *casefolded_name1 = NULL;
+       g_autofree gchar *casefolded_name2 = NULL;
+
+       if (gs_app_get_name (app1) != NULL)
+               casefolded_name1 = g_utf8_casefold (gs_app_get_name (app1), -1);
+       if (gs_app_get_name (app2) != NULL)
+               casefolded_name2 = g_utf8_casefold (gs_app_get_name (app2), -1);
+       return g_strcmp0 (casefolded_name1, casefolded_name2);
 }
 
 GsPlugin *