[build2] libpq and SSL

[Boris Kolpackov]

Патрушев Данил Андреевич <d.patrushev at prosoftsystems.ru> writes:

> Hi, am I right in thinking that libpq found in the cppget repository
> is built without SSL support?  I doesn't seem to have any ssl dependencies.

Correct. We do have it on our TODO list to adjust the buildfiles so that
it is built with OpenSSL (similar to how we've done it for libmysqlclient).