Moving KPart args from QStringList to QVariantList

[Matt Broadstone]

  In plasma we've run into a situation where we'd like to cache the
KService::Ptr for a given applet in the applet itself, and it seems
the only way to do this is to pass it along to the applet factory by
means of args, however args is a QStringList.
  I was wondering if anyone would be averse to me switching this
QStringList to a QVariantList so we can pass the ptr in - the change
should be more or less transparent for current code. The change
probably qualifies for a bc monday commit so if I get the go ahead I'd
like to commit the change this monday.

Matt Broadstone