Create table in PostgreSQL

It is a work-around to make this module work with PostgreSQL. It can be incorporated into node_limitnumber.install

I created the table manually. Everything else seems to be working so far. Works for me.

CREATE TABLE "public"."databaseprefix_node_limitnumber_rules" (
  "id" SERIAL NOT NULL, 
  "class"  VARCHAR(32) NOT NULL,
  "item" INTEGER NOT NULL, 
  "pubtype" VARCHAR(32) NOT NULL, 
  "max" INTEGER NOT NULL,
  CHECK ("class" IN ('role', 'user')), 
  PRIMARY KEY("id")
) WITH OIDS;