PVR addons: switch to https://github.com/bkuhls/xbmc-pvr-addons

Temporary fix until the merge request gets pulled into opdenkamp/xbmc-pvr-addons
Thanks goes to bkuhls.
Side note, I managed to build json-c and cryptopp but for some reason the filmon add-on would not complete compilation due to errors.
For now filmon will be disabled. Anyone who wishes filmon to be added and can help please feel free to do so by contributing to this or quarnster's  github by submitting a pull request.