(e.g. DAs with missing or incorrect binaries.)

Also, we now import products before opening the database.
This gives products a chance to try to fix things up that
may hurd old pickles.

(e.g. DAs with missing or incorrect binaries.)

improved error handling during testing.

unusual cases related to weird seeks.  There was also
a case where an optional argument (to O_getval) was not
properly initialized.

Python 1.4 and 1.5 comparison differences.