Support `mysqldump --tab` command on remote client machine

# mysqldump --help
...
 -T, --tab=name Create tab-separated textfile for each table to given
                      path. (Create .sql and .txt files.) NOTE: This only works
                      if mysqldump is run on the same machine as the mysqld
                      server.

`mysqldump --tab` seems to use SELECT ... INTO OUTFILE.

«The SELECT ... INTO OUTFILE statement is intended primarily to let you very quickly dump a table to a text file on the server machine. If you want to create the resulting file on some other host than the server host, you normally cannot use SELECT ... INTO OUTFILE since there is no way to write a path to the file relative to the server host's file system.»
http://dev.mysql.com/doc/refman/5.0/en/select-into.html

The suggestion is to support `mysqldump --tab` command on remote client machine.