linux-testing: 4.10-rc4 -> 4.10-rc7

Tested via building the linux_testing attribute only, not in production.

Verified unpacked tarball with GnuPG:

gpg: Signature made Mon 06 Feb 2017 12:21:50 AM CET
gpg:                using RSA key 79BE3E4300411886
gpg: Good signature from "Linus Torvalds <torvalds@linux-foundation.org>" [unknown]
Primary key fingerprint: ABAF 11C6 5A29 70B1 30AB  E3C4 79BE 3E43 0041 1886

Signed-off-by: aszlig <aszlig@redmoonstudios.org>