Added --protocol to mysqlbinlog


client/mysql.cc:
  Indentation cleanup
client/mysqlbinlog.cc:
  Added protocol option
mysql-test/r/rpl_until.result:
  Update results
mysql-test/t/rpl_until.test:
  If --sleep option was given then the salve could do many retries, which affected the size of the binary log. This is fixed by not comparing the binary log size/position
sql/mysqld.cc:
  More debugging with set_maximum_open_files()
vio/viosocket.c:
  Portability fix.