[pvr.tvh] remove non-existing field "subtitle" from events
[pvr.tvh] remove unnecessary call to SEvent.Clear()

Already done in the constructor.
[pvr.tvh] remove some unused and rarely used methods
[pvr.tvh] lock the correct mutex in GetRecordingEdl()
[pvr.tvh] a getDvrCutpoints response without a cutpoint list is not malformed,
it just means there are no cutpoints for that recording
[pvr.tvh] reduce lock scope in various places
[pvr.tvh] avoid duplicate locking
[pvr.tvh] add missing lock
[pvr.tvh] fix confusion when logging retrieved recordings
add Netbeans project files to .gitignore
sync the API with the latest changes