Docs/manual.texi:
  Added documentation for ALTER TABLE ... ORDER BY ...
sql/mysql_priv.h:
  Exported make_unireg_sortorder
  Exported setup_order
sql/sql_base.cc:
  Changes for ALTER TABLE ... ORDER BY ...
sql/sql_parse.cc:
  Changes for ALTER TABLE ... ORDER BY ...
sql/sql_select.cc:
  Moved make_unireg_sortorder and setup_order prototypes to
  mysql_priv.h and made them non-static so that they can be 
  used elsewhere.  Needed for ALTER TABLE ... ORDER BY ...