Updating submodules
Updating submodules

Summary:
GitHub commits:

https://github.com/facebook/folly/commit/140e8ccd92c67d294a7c5f8a4a001699dafc1360
https://github.com/facebookincubator/velox/commit/fc670e04132b5de929901943d6c3abd491dd193d

Reviewed By: bigfootjon

fbshipit-source-id: 2354e9dd23fd3b8c615147f1254984582a9b2f0b

facebook/wangle,facebook/wangle,facebook/wangle