LP1786524: Don't require user to pass in db connection info

LP1786524: Don't require user to pass in db connection info

Passing a production database password on the command line is a bad
security practice.  Let's pull the database connection information
from opensrf.xml instead, while still allowing users to override
the default db connection information.

Also, let's install this into /openils/bin by default.

Signed-off-by: Jane Sandberg <sandbej@linnbenton.edu>
Signed-off-by: Rogan Hamby <rogan.hamby@gmail.com>