Fix mysql-test-run.pl: IM in 5.0 uses old incorrect

'shutdown_delay' option name.


mysql-test/mysql-test-run.pl:
  IM in 5.0 uses old incorrect 'shutdown_delay' option name.

mysql-test/mysql-test-run.pl

@@ -2993,7 +2993,7 @@ language            = $path_language
 character-sets-dir  = $path_charsetsdir
 basedir             = $path_my_basedir
 server_id           = $server_id
-shutdown-delay      = 10
+shutdown_delay      = 10
 skip-stack-trace
 skip-innodb
 skip-ndbcluster