changes to fix joins not working (bug #10848). New tests, as well as table->status being set in index_read_idx


mysql-test/r/federated.result:
  new join test results
mysql-test/t/federated.test:
  new simple join tests (more to come with subsequent commits)
sql/ha_federated.cc:
  This fixes joins not working. Monty discussed that having to deal 
  with table->status needs to be moved from the handler/storage engine
  to a higher level
BitKeeper/etc/logging_ok:
  Logging to logging@openlogging.org accepted