Fix for rTorrent v0.9.7+ (#2250)
Fix for rTorrent v0.9.7+ (#2250)

[change] rtorrent: replaced d.multicall with d.multicall2 since it's been deprecated since 0.9.0, Fixes #2239
JorisDeRieck/Flexget,gazpachoking/Flexget,tobinjt/Flexget,Flexget/Flexget,Danfocus/Flexget,crawln45/Flexget,Danfocus/Flexget,Danfocus/Flexget,tobinjt/Flexget,gazpachoking/Flexget,Flexget/Flexget,JorisDeRieck/Flexget,malkavi/Flexget,JorisDeRieck/Flexget,crawln45/Flexget,crawln45/Flexget,tobinjt/Flexget,Flexget/Flexget,malkavi/Flexget,tobinjt/Flexget,malkavi/Flexget,crawln45/Flexget,JorisDeRieck/Flexget,malkavi/Flexget,ianstalk/Flexget,Danfocus/Flexget,ianstalk/Flexget,ianstalk/Flexget,Flexget/Flexget