[ic] timed build for logged in users

[interchange-users@interchange.redhat.com (Kevin Walsh)]

> Please clarify the functionality of the [timed-build] tag as it realtes to
> logged in users.  I find that a logged in user prevents a timed build page
> from being build to the timed/ directory.  Does it also follow then, that
> when a user is logged in, they're not actually being served up the
> timed-built page and IC software is regenerating that page?  Also, if I had
> the timed-build around areas not affected by a logged-in user, will it still
> not build the page when someone is logged in?
> 
[timed-build] will re-interpolate the contained tags, instead of
serving the cached region, unless the login=1 or auto=1 parameters
are given.

The [timed-build] tag does not know whether your site treats logged-in
users differently from non-logged-in users and therefore has to rely on
you telling it to "always cache" by passing the login=1 or auto=1
parameter.

Regardless of the login or auto parameters, [timed-build] will still
refuse to build/use its cache if the user is not using a cookie for
their session ID.  This behaviour can be overridden using the force=1
parameter if you really need this to happen.

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