pango_log2vis_get_embedding_levels - wrong synopsis

SQL to update pango_log2vis_get_embedding_levels synopsis

LSB 4.0 declares pango_log2vis_get_embedding_levels in the following way:

gboolean pango_log2vis_get_embedding_levels(
    gunichar * text,
    gint length,
    PangoDirection * pbase_dir,
    guint8 *);

However, Pango 1.10.4 Reference Manual (referenced by LSB 4.0), as well as
upstream header, have the following declaration:

guint8 * pango_log2vis_get_embedding_levels (const gchar *text,
                                             int length,
                                             PangoDirection *pbase_dir);

These two declarations doesn't seem to be compatible.

It seems that the change was made quite long ago, so probably LSB should be
just updated to match upstream - the SQL attached can be used to do this.

(Unfortunately, we don't have any tests for this function, and we even can't
see any applications using it, otherwise we could probably detect the change
earlier)