/var/tmp in my path when testing data diretory.  the var directory
exists in a src tree but may not exist in a different testing
build setup.


mysql-test/r/partition_mgm_err.result:
  added a row insert just to make sure the data and index files are made
mysql-test/t/partition_mgm_err.test:
  removed the /var/tmp path elements since there is not guarantee that
  other build setups will include this path