deprecated interfaces

Some previously deprecated interfaces were removed from the Berkeley DB 4.5 release:

• The DB_ENV->set_lk_max method was removed. This method has been deprecated and undocumented since the Berkeley DB 4.0 release.
• The DB->stat method flags DB_CACHED_COUNT and DB_RECORDCOUNT were removed. These flags have been deprecated and undocumented since the Berkeley DB 4.1 release.
• The -w option to the db_deadlock utility was removed. This option has been deprecated and undocumented since the Berkeley DB 4.0 release.