rename INFER to INFER_EXECUTABLE
rename INFER to INFER_EXECUTABLE

Summary: public this follows the naming in other scripts

Reviewed By: jeremydubreil

Differential Revision: D2646981

fb-gh-sync-id: 4c69c1f

ryoon/infer,kageiit/infer,jsachs/infer,jsachs/infer,xennygrimmato/infer,facebook/infer,facebook/infer,blzq/infer,xennygrimmato/infer,ropas/infer,kageiit/infer,blzq/infer,ropas/infer,xennygrimmato/infer,ryoon/infer,jsachs/infer,kageiit/infer,xennygrimmato/infer,jvillard/infer,kageiit/infer,jvillard/infer,ropas/infer,jvillard/infer,kstreee/infer,jsachs/infer,jvillard/infer,ryoon/infer,blzq/infer,ryoon/infer,ropas/infer,ryoon/infer,kageiit/infer,xennygrimmato/infer,xennygrimmato/infer,jvillard/infer,kageiit/infer,jvillard/infer,jsachs/infer,facebook/infer,jvillard/infer,ropas/infer,ryoon/infer,facebook/infer,blzq/infer,facebook/infer,kstreee/infer,blzq/infer,kstreee/infer,jsachs/infer,ropas/infer,kageiit/infer,kstreee/infer,kstreee/infer,facebook/infer,xennygrimmato/infer,blzq/infer,kstreee/infer,facebook/infer