Merge Revision revid:vasil.dimov@oracle.com-20101111111152-go9r1lgbtpvcmfd0 from MySQL InnoDB
Original revid:vasil.dimov@oracle.com-20101111111152-go9r1lgbtpvcmfd0
Original Authors: Vasil Dimov <vasil.dimov@oracle.com> Original commit message: Remove unused parameter has_dict_mutex of dict_update_statistics_low()
Also delete dict_update_statistics() and rename dict_update_statistics_low() to dict_update_statistics() because the only thing that distinguished those two functions was the removed parameter.