* Switch out raw Exceptions, mostly for InvalidArgumentExceptions.
* Fake exceptions triggered to give Monolog a backtrace are for
some reason "traditionally" RuntimeExceptions, instead, so we
continue to use that pattern in remaining locations.
* Just entirely give up on PostgresResultWrapper's resource vs. object mess.
* Drop now-unneeded false positive hits.
Change-Id: Id183ab60994cd9c6dc80401d4ce4de0ddf2b3da0