- Add test of bootstrap mode
 - Make mysqld return error if bootstrap failed  


mysql-test/mysql-test-run.pl:
  Remove options --skip-grant-tables as that is always
  turned on by --bootstrap
  Remove options --console as that does not affect --bootstrap mode
  at all
  Add environment variable MYSQLD_BOOTSTRAP_CMD containing path 
  to mysqld and the arguments used for bootstrap
sql/sql_parse.cc:
  Abort bootstrap if execution fails
  Report error to stderr/log
mysql-test/r/bootstrap.result:
  New BitKeeper file ``mysql-test/r/bootstrap.result''
mysql-test/t/bootstrap.test:
  New BitKeeper file ``mysql-test/t/bootstrap.test''