- 'mysqldump --help' comment that --xeh-blob
    doesn't work with --extended-inserts was removed.
    It does work now. Thanks to Lachlan
    who noticed this wrong help message.
  - Switched to use the recently introduced
    mysql_hex_string() instead of slow sprintf().
    Thanks to Sinisa for the idea.
  - 'mysqldump --hex-blob' dumps in HEX not only
    BLOBs but also BINARY(x) columns. 
    Thanks to Paul.