Updating submodules
Updating submodules

Summary:
GitHub commits:

https://github.com/facebook/fbthrift/commit/54fa64fa0ea15746b2375e4def30718a3fab74c9

Reviewed By: 2d2d2d2d2d

fbshipit-source-id: 20d372938ac1b5ff847b983f30a5ee15eba88db0

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