Updating submodules
Updating submodules

Summary:
GitHub commits:

https://github.com/facebook/fb303/commit/b8b1277f80ccc7293fa85708740a0e9ed9fc6519
https://github.com/facebook/fbthrift/commit/7bb0e1fb874c837b024b36c9b920ad3044dadf21
https://github.com/facebook/fbzmq/commit/6957a21aadf8e57c638391b9d932df42b1e995fb
https://github.com/facebook/watchman/commit/41a25c6fe2e3b640e4e8c395660583b1cf60d0be
https://github.com/facebookexperimental/rust-shed/commit/508fed5711740bb4ef1a0bcd838915b805972d70
https://github.com/facebookincubator/velox/commit/99c59c8e3d40ac0522c5fd12a0e20b1113f0d02f

Reviewed By: bigfootjon

fbshipit-source-id: 636b89980aed46e994ffdbe0647a4aa83ac61e26

facebook/bistro,facebook/bistro,facebook/bistro,facebook/bistro,facebook/bistro,facebook/bistro