Update TODO list.

Index: TODO
===================================================================
RCS file: /home/projects/pgsql/cvsroot/pgsql/doc/TODO,v
retrieving revision 1.300
diff -r1.300 TODO
3c3
< Last updated:		Tue Dec 12 23:01:04 EST 2000
---
> Last updated:		Tue Dec 12 23:01:53 EST 2000
21d20
< * test to show diffs for TODO changes