Send to the Connector/C++ only valid properties
Send to the Connector/C++ only valid properties

Specially, do not send mutually exclusive properties: if connecting
through socket/pipe, don't send host/port. And check for empty string:
the database wizards always sends LocalSocket/NamedPipe properties, even
with zero length string values; sending an empty "socket" property to
the Connector/C++ has undesired effects, and causes connection failure.

arielch/aoo-my-sdbc