[TESTING] Kodi 18 (Leia) builds for Raspberry Pi

17.8-117, 18 Oct 2017: Based off OSMC commit (032a721) and newclock5 (7bd6c17)

XBMC:
bump ffmpeg to 3.4 (PR:12926, 2 commits, 7 files changed)

Includes latest addons: inputstream.adaptive (dde3921), inputstream.rtmp (26260c9), peripheral.joystick (a5cc154, +5), pvr.argustv (23cc0e8), pvr.demo (122dedd), pvr.dvblink (816f90c), pvr.dvbviewer (9765663, +1), pvr.filmon (7a9af25, +1), pvr.hdhomerun (ddfe2cb, +1), pvr.hts (0530971, +15), pvr.iptvsimple (ac4f4bd), pvr.mediaportal.tvserver (fa1069d, +1), pvr.mythtv (8965048), pvr.nextpvr (5b7caa2, +1), pvr.njoy (cc1cb56), pvr.octonet (e9b4c05), pvr.pctv (549f690), pvr.stalker (e15edca), pvr.teleboy (f773076, +5), pvr.vbox (56052da, +1), pvr.vdr.vnsi (bf48938, +4), pvr.vuplus (c53478d, +1), pvr.wmc (02edba6, +1), pvr.zattoo (cc4378f, +8)