Corrected user name passing
  Honor the --master-binary and --slave-binary options
  Insert the host name into 'user' table
  Added --udiff option, to get unified diff output
  Call special mtr_run_test() for running "mysqltest"
mtr_report.pl:
  Added --udiff option, to get unified diff output
init_db.sql:
  Insert the host name into 'user' table


mysql-test/lib/init_db.sql:
  Insert the host name into 'user' table
mysql-test/lib/mtr_report.pl:
  Added --udiff option, to get unified diff output
mysql-test/mysql-test-run.pl:
  Corrected user name passing
  Honor the --master-binary and --slave-binary options
  Insert the host name into 'user' table
  Added --udiff option, to get unified diff output
  Call special mtr_run_test() for running "mysqltest"