Changes by Andreas Mair <andreas _AT_ vdr-developer.org>

* 1.2-test1-AM2
- Adapt cutter thread to VDR v1.7.3.

* 1.2-test1-AM1
- fixed wrong help keys if selected recording finishes cutting.
- plugins/extrecmenu/dircmds.conf for recording directory commands (same as reccmds.conf)
- "nice" the action thread.
- Use LimitBandwidth setting also for cutting.

TODO:
- ioprio_set