New benchmarks tests


sql-bench/test-insert.sh:
  Added a lot of new ORDER BY tests
sql/filesort.cc:
  Fix for big BDB tables
sql/ha_berkeley.cc:
  A
sql/ha_berkeley.h:
  A
sql/handler.h:
  A
sql/sql_class.h:
  Portability fix
BitKeeper/etc/logging_ok:
  Logging to logging@openlogging.org accepted