[PATCH] Make org-agenda-todo-ignore-* more flexible

[Andrew Lutomirski <luto@mit.edu>]

Hi all-

I'm pretty close to switching to org-mode to keep a todo list, but the
current set of options doesn't do it for me.  I want my todo list to
show:

 - todos without a date (that means "do at earliest convenience")
 - todos scheduled for today or earlier (that means "do at earliest
convenience, but don't bother until scheduled date")
 - todos with near deadlines (that means "do by deadline but not
before warning")

This patch adds more options to
org-agenda-todo-ignore-{scheduled,deadlines} to allow this usecase.
It shouldn't break compatibility with existing uses -- both variables
do exactly what they used to when set to t.

commit: http://github.com/amluto/org-mode/commit/afa59fc91630bcffe388228566aa0137d1b2e7fd
topic: http://github.com/amluto/org-mode/tree/agenda-todo-improvements
git URL: git@github.com:amluto/org-mode.git agenda-todo-improvements

Do you like this patch?  And do I need to submit a copyright assignment?

Thanks,
Andy