add google external bits

Change-Id: I57764e7665966d245d6a5a2a2c9fdfa71b8aa89e
Add NTFS-3g, FUSE and exFAT repositories

Change-Id: I01983adfbd5700f70b528444d03f68e25ccf5002
Merge pull request #6 from alteredlikeness/alt-dev

add external/google, exfat, ntfs-3g