Added option --host to mysqlhotcopy


mysql-test/mysql-test-run.sh:
  Added error message if the server doesn't start.
  Increase connect timeout a bit (for running under purify).
mysql-test/t/rpl000001.test:
  Longer sleep time (for running under purify)
scripts/mysqlhotcopy.sh:
  Added option --host for usage with TCP/IP connections
sql/gen_lex_hash.cc:
  Fixed typo