[Kde-imaging] pkg-config and other stuff

[Renchi Raju]

does anyone have any objections if i pkg-configify libkipi? if not, i will
go ahead and do the necessary stuff.

also, gilles, what purpose does adding a banner to all the plugins serve.
i don't like it because the kipi plugins are supposed to be integrated
well with the host app and not be identifiable as distinct plugins.

i just tested the calendar plugin and the addition of the banner has
broken the layout. i didn't have the time to test the other plugins.

renchi