allow to require jdbc/postgresql (maintain conventions) even as the gem name is f*cked

Author: kares

jdbc-postgres/lib/jdbc/postgres.rb

@@ -48,5 +48,5 @@ def self.jdbc_version
       load_driver :require
     end
   end
-  PostgreSQL = Postgres
+  PostgreSQL = Postgres unless const_defined?(:PostgreSQL)
 end

jdbc-postgres/lib/jdbc/postgresql.rb

@@ -0,0 +1 @@
+require 'jdbc/postgres'

jdbc-postgres/lib/jdbc/postgresql/version.rb

@@ -0,0 +1,5 @@
+require 'jdbc/postgresql/version'
+
+module Jdbc
+  PostgreSQL = Postgres unless const_defined?(:PostgreSQL)
+end