DBIx::Class: migrate to use_namespaces

This gives us a place to put helper functions that act on entire
tables, not just individual records.

This should be a backwards compatible change, except in places we're
manually using result class names.

src/sql/update-dbix.pl

@@ -5,6 +5,7 @@ die "$0: dbi connection string required \n" if scalar @ARGV != 1;
 make_schema_at("Hydra::Schema", {
     naming => { ALL => "v5" },
     relationships => 1,
+    use_namespaces => 1,
     moniker_map => {
         "aggregateconstituents" => "AggregateConstituents",
         "buildinputs" => "BuildInputs",