Move g_get_codeset next to g_get_charset

g_get_codeset is a close relatove to g_get_charset, and up to now
it lived a shadowy existence without any header presence.

docs/reference/glib/glib-sections.txt

@@ -2666,6 +2666,7 @@ GConvertError
 
 <SUBSECTION>
 g_get_charset
+g_get_codeset
 
 <SUBSECTION Private>
 g_convert_error_quark

glib/gunicode.h

@@ -489,13 +489,8 @@ typedef enum
 guint32        g_unicode_script_to_iso15924   (GUnicodeScript script);
 GUnicodeScript g_unicode_script_from_iso15924 (guint32        iso15924);
 
-/* Returns TRUE if current locale uses UTF-8 charset.  If CHARSET is
- * not null, sets *CHARSET to the name of the current locale's
- * charset.  This value is statically allocated, and should be copied
- * in case the locale's charset will be changed later using setlocale()
- * or in some other way.
- */
 gboolean g_get_charset (const char **charset);
+gchar *  g_get_codeset (void);
 
 /* These are all analogs of the <ctype.h> functions.
  */

glib/gutf8.c

@@ -583,7 +583,7 @@ charset_cache_free (gpointer data)
  * freed.
  *
  * Return value: %TRUE if the returned charset is UTF-8
- **/
+ */
 gboolean
 g_get_charset (const char **charset)
 {
@@ -618,6 +618,24 @@ g_get_charset (const char **charset)
   return cache->is_utf8;
 }
 
+/**
+ * g_get_codeset:
+ *
+ * Gets the character set for the current locale.
+ *
+ * Return value: a newly allocated string containing the name
+ *     of the character set. This string must be freed with g_free().
+ */
+gchar *
+g_get_codeset (void)
+{
+  const gchar *charset;
+
+  g_get_charset (&charset);
+
+  return g_strdup (charset);
+}
+
 /* unicode_strchr */
 
 /**

glib/gutils.c

@@ -2955,24 +2955,6 @@ g_nullify_pointer (gpointer *nullify_location)
   *nullify_location = NULL;
 }
 
-/**
- * g_get_codeset:
- *
- * Get the codeset for the current locale.
- *
- * Return value: a newly allocated string containing the name
- * of the codeset. This string must be freed with g_free().
- **/
-gchar *
-g_get_codeset (void)
-{
-  const gchar *charset;
-
-  g_get_charset (&charset);
-
-  return g_strdup (charset);
-}
-
 #ifdef G_OS_WIN32
 
 /**