Podcast Support

[Mathias Panzenböck]

And another thing:
It might be handy to add in:
src/browsers/playlistbrowser/PodcastModel.h

an enum "PodcastCommonRole" or something like that and according code with which
you can get the appropriate object out the QModelIndex (is it possible to assign
an arbitrary (smart) pointer to a QVariant? didn't look into that yet). This
would come handy in PodcastCategory::showInfo in:
src/browsers/playlistbrowser/PodcastCategory.cpp

because so you could generate html that contains all sorts of metadata (like in
amarok 1.4 was displayed).

	-panzi