Low-level logic for creating connection pools for a JDBC-based database. Used by both application DB and connected
data warehouse DBs.

The aim here is to completely encapsulate the connection pool library we use -- that way we can swap it out if we
want to at some point without having to touch any other files. (TODO - this is currently true of everything except
for the options, which are c3p0-specific -- consider abstracting those as well?)