package/poco: add Data/PostgreSQL support

PostgreSQL support was introduced in poco v1.10.0, in commit:
https://github.com/pocoproject/poco/commit/8cec8f6451b9a0ead80f655eee986040863e3526



Signed-off-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>