[TESTING] Kodi 17 (Krypton) builds for Raspberry Pi (continued)

[sam_nazarko]

Fixed. @gmc just needs to pick two commits:

[package] [mediacenter-osmc] Krypton: Use OSMC version of CMake. Binary add-ons need CMake 3.6+ now.

[package] [mediacenter-osmc] Ensure that binary add-ons are installed to the correct directory