[sledge] Combine name and loc tables into one
[sledge] Combine name and loc tables into one

Summary:
The name and loc tables are added-to almost exactly in sync, so
combine them to amortize the overhead.

Reviewed By: kren1

Differential Revision: D15535435

fbshipit-source-id: 801da75bb

jvillard/infer,facebook/infer,jvillard/infer,facebook/infer,facebook/infer,jvillard/infer,jvillard/infer,jvillard/infer,facebook/infer,jvillard/infer,facebook/infer,jvillard/infer,facebook/infer,facebook/infer