used. The problem is that the actual engine was not stored in the .par
file, causing confusion when the default engine was changed. Now the
actual storage engine is stored for subpartitions, as was intended.


mysql-test/r/partition.result:
  Add new results
mysql-test/t/partition.test:
  Add new regression test, marker for end of 5.1 tests
sql/ha_partition.cc:
  Record correct engine type for subpartition parts, and fix use of
  constant for .par extension instead of ha_par_ext variable.