postgresql 8.4.20

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
postgresql 9.0.16

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
postgresql 9.1.12

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
postgresql 9.2.7

Closes #363.
Closes #365.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>