Cleanups for storage engine patch. Changed two test results to now reflect the changes in storage engines and a couple of comment changes in the code. 


mysql-test/r/ps_1general.result:
  Redoing test output with straightened up output for storage engine names.
mysql-test/r/variables.result:
  Fixed test case.
sql/handler.cc:
  Couple of format cleanups and a change in a comment.