[O] loading all agenda files at startup

[Eric Abrahamsen]

I've got a few top-level user commands, related to org, that load at
startup. Specifically org-agenda and org-ido-switchb are bound to keys
that are available after emacs starts up. Before Org loads properly,
however, things like the agenda file list and the list of valid tags and
TODO keywords are unavailable. That makes it hard to boot emacs and go
directly into a call to `org-todo-list': the TODO keywords aren't loaded
yet.

I've looked into this before but couldn't find a single function that
would "boot" my local data. `org-agenda-files' reads the file list, but
it doesn't actually parse the files and do all the setup routines.

Is there a single-function entry point that I could put in my init
files, that would get me where I want to be? ie, in a state as though
`org-agenda' had already been called, though it hasn't yet?

Thanks,
Eric