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.sql

@@ -17,8 +17,8 @@ CREATE TABLE prefix_block_instance (
   id SERIAL8 PRIMARY KEY,
   blockid INT8 not null default '0',
   pageid INT8 not null default '0',
-  pagetype varchar(12) not null check (pagetype in ('course')), 
-  position char not null check (position in ('l', 'r')),
+  pagetype varchar(20) not null default '',
+  position varchar(10) not null default '',
   weight int not null default '0',
   visible int not null default '0',
   configdata text not null default ''