Pages/blocks code updates:

NEW: The code now supports dynamically plugging your own Pages and block position
identifiers into Moodle without messing with the main libraries at all.

UPDATE: Many functions in blocklib now use pass-by-reference for speed.

UPDATE: Class MoodlePage has been made more presentable and robust.

blocks/db/postgres7.php

@@ -119,6 +119,11 @@ global $CFG;
         execute_sql("ALTER TABLE {$CFG->prefix}course DROP COLUMN blockinfo");
     }
 
+    if ($oldversion < 2004112900 && $result) {
+        $result = $result && table_column('block_instance', 'pagetype', 'pagetype', 'varchar', '20', '');
+        $result = $result && table_column('block_instance', 'position', 'position', 'varchar', '10', '');
+    }
+
     //Finally, return result
     return $result;
 }