Updating submodules
Updating submodules

Summary:
GitHub commits:

https://github.com/facebook/folly/commit/b22ffef21130b050d9868abb75626b8b521302c0
https://github.com/facebookincubator/velox/commit/f776982f98f62174bde15d38a25388f3bf1ea6c8

Reviewed By: jurajh-fb

fbshipit-source-id: 631d2e88ebbfb7c01b439e592f3a2b82563294d1

facebook/wangle,facebook/wangle,facebook/wangle