add a special Provides: to all login manager packages

[Rex Dieter]

Bill Nottingham wrote:

> Kevin Kofler (kevin.kofler at chello.at) said:
>> >    Provides: login(display)
>> 
>> What about:
>> Provides: runlevel(5)
> 
> If at some point in the future, runlevel becomes a meaningless construct,
> that dependency may not be logical.
> 
> 5 is, after all, an arbitrary tradition that isn't even required by
> the LSB.

Provides: bikeshed(loginmanager)

-- Rex