Viafree: Added SDH subfix to subtitle files when --all-subtitles are used
Viafree: Added SDH subfix to subtitle files when --all-subtitles are used

Added support to download both regular and Subtitles for hearing impared( with -SDH subfix), when using --all-subtitles 
olof/svtplay-dl,dalgr/svtplay-dl,qnorsten/svtplay-dl,olof/svtplay-dl,spaam/svtplay-dl,qnorsten/svtplay-dl,selepo/svtplay-dl,iwconfig/svtplay-dl,selepo/svtplay-dl,dalgr/svtplay-dl,spaam/svtplay-dl,iwconfig/svtplay-dl