Branch KDEPrint to experiment with a refactor and port to Qt4.4 for KDE 4.1.

Aims:
1) Re-arrange into sub-folders based on functionality
2) Clearer split between base libraries required solely for printing (kdelibs) and those for management (kdebase)
3) Rename some classes to better reflect what they do
4) Namespace
5) KPrinter to inherit QPrinter
6) Use new QPrinter features where they can replace old KDEPrint code
7) Use Cups 1.2 features where they can replace old KDEPrint code (e.g. n-up)
7) Experiment with adding old KDE3 KPrintDialog features to QPrintDialog versus resurrecting KPrintDialog

This branch is likely to be very broken at any point in time.