to run the whole testcase to find wich testcases need to be checked more carefully
and the just "copy and paste" the suspicious test case names to 
a new mysql-test-run.pl command. 


mysql-test/mysql-test-run.pl:
  Mark test cases that fails "check_testcase"
  Make run_check_testcase return  value indicating if check failed
mysql-test/include/check-testcase.test:
  New BitKeeper file ``mysql-test/include/check-testcase.test''