Starting on adapting postgresql schema class to look stuff up in the new drupalish format...

Fetching basic column data and unique indexes. Still needs detail work, multi-value indexes, foreign keys, and distinguishing the primary key.
Since we don't get comments and such, for cleaner comparisons we should probably do a filtering on supported features.

lib/mysqlschema.php

@@ -243,29 +243,6 @@ class MysqlSchema extends Schema
         return $this->fetchQueryData($sql);
     }
 
-    /**
-     * Pull info from the query into a fun-fun array of dooooom
-     *
-     * @param string $sql
-     * @return array of arrays
-     */
-    protected function fetchQueryData($sql)
-    {
-        $res = $this->conn->query($sql);
-        if (PEAR::isError($res)) {
-            throw new Exception($res->getMessage());
-        }
-
-        $out = array();
-        $row = array();
-        while ($res->fetchInto($row, DB_FETCHMODE_ASSOC)) {
-            $out[] = $row;
-        }
-        $res->free();
-
-        return $out;
-    }
-
     /**
      * Creates a table with the given names and columns.
      *