- mysqlslap result file update after merge.
 - Fix skipping certain tests when running test suite as root, got broken somehow.

mysql-test/mysql-test-run.pl:
  Somehow skipping tests when running as root got broken. The mysqltest if() no longer seems
  to accept YES as a true value, so use 1 for true value instead.
mysql-test/r/mysqlslap.result:
  Result file update after change in engine behaviour of mysqlslap.
mysql-test/t/mysqld_option_err.test:
  This test does not work when run as root.