- Stop throwing close error if fd is bad (already closed!)
- Free ecm request if it dont reach request cw stage in dvbapi
- DVBAPI Requestmode 1 small fix
- Rework of stop filter, now its analogue to start filter
- On camask change dont setup additional demuxer but replace camask on already running demuxer 


git-svn-id: http://streamboard.de.vu/svn/oscam/trunk@8855 4b0bc96b-bc66-0410-9d44-ebda105a78c1