Update TODO list.

doc/TODO

 TODO list for PostgreSQL
 ========================
-Last updated:		Mon May 21 14:40:08 EDT 2001
+Last updated:		Mon May 21 21:35:07 EDT 2001
 
 Current maintainer:	Bruce Momjian (pgman@candle.pha.pa.us)
 
@@ -130,6 +130,7 @@ SYSTEM TABLES
 * Check all system tables and add unique indexes as needed
 * Remove pg_listener index
 * -Remove unused pg_variable, pg_inheritproc, pg_ipl tables
+* Add pg_depend table to track object dependencies
 
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