Migrate TARGETS files from @/ to //
Migrate TARGETS files from @/ to //

Summary:
This is a codemod to change from using @/ to // in basic cases.
- TARGETS files with lines starting with @/ (but excluding @/third-party:
- autodeps lines in source and TARGETS files ( (dep|manual)=@/ ), excluding @/third-party
- Targets in string macros

The only thing left of the old format should be @/third-party:foo:bar

drop-conflicts

Reviewed By: ttsugriy

Differential Revision: D6605655

fbshipit-source-id: 29ad6d74015394676e4774a39f8f91bf30594477

facebook/mcrouter,facebook/mcrouter,facebook/mcrouter,facebook/mcrouter