Redesign/refactoring of KTrader:
- separated KMimeTypeTrader and KTrader (will be renamed to KServiceTypeTrader when I have more time)
their api is different, since ktrader works with 1 servicetype as input (e.g. KMyApp/Plugin),
and KMimeTypeTrader works with mimetype + generic service type (Application, KParts/ReadOnlyPart, etc.)
- changed the command-line tool ktradertest accordingly, it now takes -mimetype and/or -servicetype, and -constraint arguments
- moved preferredService() to the traders, no more direct use of KServiceTypeProfile
- also moved OfferList, to KTrader which is now the weighted one. Most KTrader usage is simply ported to KService::List.
- removed unused "preferences" feature (was expressed in the trader query language, and used for custom sorting of services)
- moved KServiceOffer into its own header file
- moved ParseTreeFoo stuff out of the KIO namespace and into KTraderParse namespace (since this will go into kdecore)