Add "two liner" to mysqld --bootstrap that allows
wo write scripts that can be run both by mysql and mysqld --bootstrap
Remove duplicate create of MySQL system tables 


mysql-test/r/mysql_upgrade.result:
  Update mysql_upgrade.result for new tables in 5.1
scripts/mysql_system_tables.sql:
  Use "delimiter ;;" to make it possible to run the script
  both with "mysql" and "mysqld --bootstrap"
scripts/mysql_system_tables_fix.sql:
  Remove duplicate stored procedure for creating slow_log
  and general_log.
  Remove duplicate CREATE of ndb_binlog_index.
  Those are already defined in mysql_system_tables.sql
sql/sql_parse.cc:
  Make "mysqld --bootstrap skip lines startig with "delimiter"
  thus making it possible to write sql scripts containing
  stored procedures that can be executed both  with "mysql" and
  "mysqld --bootstrap"