[vala/staging: 1/3] glib-2.0: Add some 2.58 symbols

[Rico Tzschichholz <ricotz src gnome org>]

commit c124f827557420b620f7118cfbabb15d83b4a3e6
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Fri Sep 7 14:33:15 2018 +0200

    glib-2.0: Add some 2.58 symbols

 vapi/glib-2.0.vapi | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/vapi/glib-2.0.vapi b/vapi/glib-2.0.vapi
index c46dabc16..eb02be635 100644
--- a/vapi/glib-2.0.vapi
+++ b/vapi/glib-2.0.vapi
@@ -2667,6 +2667,8 @@ namespace GLib {
                public static string display_name (string filename);
                [Version (since = "2.6")]
                public static string display_basename (string filename);
+               [Version (cname = "g_canonicalize_filename", since = "2.58")]
+               public static string canonicalize (string filename, string? relative_to = null);
        }
 
        public errordomain ConvertError {
@@ -5477,6 +5479,7 @@ namespace GLib {
                public const uint @2_52;
                public const uint @2_54;
                public const uint @2_56;
+               public const uint @2_58;
 
                [CCode (cname = "glib_binary_age")]
                public const uint binary_age;