Release candidate available for the 4.3 version of ktorrent

The release of ktorrent 4.3 and libktorrent 1.3 is approaching. In anticipation a first release candidate is available for ktorrent and libktorrent.

The biggest changes since the 4.2 release include:
- Reintroduction of a tabbed torrent list widget, though a bit different then the old tab widget from the 4.1 days.
- Improved support for magnet links
- Support for removable storage
- A whole bunch of bugfixes and smaller improvements over ktorrent

For a full list of changes, take a look at the ChangeLog files included with the tar balls.