extern gchar *mono_utf8_from_external (const gchar *in);
extern gchar *mono_unicode_to_external (const gunichar2 *uni);
extern gboolean mono_utf8_validate_and_len (const gchar *source, glong* oLength, const gchar** oEnd);
extern gchar *mono_utf8_from_external (const gchar *in);
extern gchar *mono_unicode_to_external (const gunichar2 *uni);
extern gboolean mono_utf8_validate_and_len (const gchar *source, glong* oLength, const gchar** oEnd);