CanalTP/navitia — pull request #514 by TeXitoi (2014-08-29 10:42:37+00:00)
Title: ed: support pqxx v3 and v4

As pqxx::prepare changed in pqxx v4 and that we need to support pqxx v3 because v4
is not yet in Debian stable, we check the pqxx version with the preprocessor.

fix #301.