[gthumb] removed const from type declaration

[Paolo Bacchilega <paobac src gnome org>]

commit 37be1417402aebab0e39ad6a0d58ec1f699da92c
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Sat Apr 4 21:22:32 2015 +0200

    removed const from type declaration
    
    const is not well supported by C when used for array of strings.

 gthumb/glib-utils.c |    4 ++--
 gthumb/glib-utils.h |    4 ++--
 gthumb/gth-main.c   |    2 +-
 3 files changed, 5 insertions(+), 5 deletions(-)
---
diff --git a/gthumb/glib-utils.c b/gthumb/glib-utils.c
index 7d4dd15..cf63930 100644
--- a/gthumb/glib-utils.c
+++ b/gthumb/glib-utils.c
@@ -1347,8 +1347,8 @@ _g_strv_prepend (char       **str_array,
 
 
 char **
-_g_strv_concat (const char *const *strv1,
-               const char *const *strv2)
+_g_strv_concat (char **strv1,
+               char **strv2)
 {
        char **result;
        int    i, j;
diff --git a/gthumb/glib-utils.h b/gthumb/glib-utils.h
index 5a9d76c..763ca26 100644
--- a/gthumb/glib-utils.h
+++ b/gthumb/glib-utils.h
@@ -215,8 +215,8 @@ gboolean        _g_strv_contains                 (char       **v,
                                                  const char  *s);
 char **         _g_strv_prepend                  (char       **str_array,
                                                  const char  *str);
-char **         _g_strv_concat                   (const char *const *strv1,
-                                                 const char *const *strv2);
+char **         _g_strv_concat                   (char       **strv1,
+                                                 char       **strv2);
 gboolean        _g_strv_remove                   (char       **str_array,
                                                  const char  *str);
 char *          _g_str_remove_suffix             (const char  *s,
diff --git a/gthumb/gth-main.c b/gthumb/gth-main.c
index 3f4ff45..7f6e1fa 100644
--- a/gthumb/gth-main.c
+++ b/gthumb/gth-main.c
@@ -1267,7 +1267,7 @@ gth_main_activate_extensions (void)
                user_actived_extensions = g_strdupv ((char **) default_extensions);
                g_settings_set_strv (settings, PREF_GENERAL_ACTIVE_EXTENSIONS, (const char *const *) 
user_actived_extensions);
        }
-       actived_extensions = _g_strv_concat (mandatory_extensions, (const char *const *) 
user_actived_extensions);
+       actived_extensions = _g_strv_concat (mandatory_extensions, user_actived_extensions);
        ordered_extensions = gth_extension_manager_order_extensions (Main->priv->extension_manager, 
actived_extensions);
 
        manager = gth_main_get_default_extension_manager ();