- Check that length of value is longer than 1 before decrementing length by 2.
 - Backport from 5.0, make it possible to use my_print_defaults in tests


mysql-test/mysql-test-run.pl:
  Backport from 5.0, make it possible to use my_print_defaults from tests
mysql-test/mysql-test-run.sh:
  Backport from 5.0, make it possible to use my_print_defaults from tests
mysql-test/r/mysqldump.result:
  Update result
mysql-test/t/mysqldump.test:
  Test that my_print default don't segfault when encountering an option without closing "
mysys/default.c:
  Check that length of value is longer than 1 before deciding to decrement its length by 2.
mysql-test/std_data/bug15328.cnf:
  New BitKeeper file ``mysql-test/std_data/bug15328.cnf''