Fix broken XVDR addon download URL
Re-allow specifying architecture-specific patches (lost in 997dd43f8)
Replace x64 game client repo with 32-bit repo for i386 targets
RetroPlayer: update to 17f3b5f (https://github.com/garbear/xbmc/commit/17f3b5f)
RetroPlayer: update to e670682 (https://github.com/garbear/xbmc/commit/e670682)