[request-tracker-maintainers] Bug#644187: request-tracker4: PSGI interface; not depending on apache2

[Adam Thompson]

> What I believe Adam is requesting is an alternative to installing
> Apache for RT; the current dependencies go
>
> request-tracker4 -> rt4-apache2 -> apache2

Yes, more or less.  I'd like to see request-tracker4 depend on
"rt4-webserver", where rt4-webserver is a virtual package provided by
either rt4-apache2, or rt4-starman, or rt4-whatever, each of which in
turn depends on the appropriate webserver.

I don't run request-tracker4 under Apache, as a rule, so it's silly to
have to install and then disable apache2 on an otherwise stripped-down
VM.

-Adam