Simple, non critical, fix to mysql_fix_privilege_tables


client/mysqldump.c:
  Ensure that we free memory used with --order-by-primary
mysql-test/t/system_mysql_db_fix.test:
  Remove warnings when compiled with support for ISAM
scripts/mysql_fix_privilege_tables.sh:
  Ensure that 'my_print_defaults' is called correctly
sql/set_var.cc:
  Code style cleanups
sql/sql_db.cc:
  Fixed comments
sql/udf_example.cc:
  Fixed comments