[vdr] VDR-1.3.37: retuning -- possibly a fix for VDSB

Hi,

the attached patch introduces some timeouts while the device is tuning and when it looses the lock:

DISEQC_REPEAT_TIMEOUT (500 ms) is used to repeat the DiSEqC signalling in case the where a multiswitch receives at first a malformed message and therefore doesn't switch.

TUNE_TO_RETUNE_TIMEOUT (3000 ms) is used to instruct the device to start the tuning operation once again in case the above DiSEqC signalling doesn't work.

LOST_LOCK_TO_RETUNE_TIMEOUT (500 ms) lets the device retune after a LOCKED to NOT LOCKED transition, probably under bad reception conditions.

Please give the patch a try and report success or failure.

Tests of special interest: - bad reception conditions (DVB-T) - steering dishes

Bye.