[packagekit] ACTION REQUIRED: please fix up your python backends

[Anders F Björklund]

Richard Hughes wrote:
> I'm making this change so all backends do not have to split the
> strings themselves, and so we can ensure that all backends support
> multiple search terms. I'll convert the yum backend now.

I converted the smart backend... (to use search arrays)

Haven't changed the ruby pk api yet, as used by "ports".

--anders