[PATCH] Make KDiskFreeSpace more convenient -> KJob-like usage

[Dirk Mueller]

On Wednesday 23 July 2008, Sebastian Trüg wrote:

> please find attached a patch for KDiskFreeSpace. I found it to be very
> inconvenient to use. 

A reminescense of the old implementation, which was async. I've changed it to 
be synchronous, so I'm not sure if we should invest more in that old 
interface. IMHO a static ::getFreeDiskspace() (better method name welcome) 
would be enough. 

Greetings,
Dirk