1. [clangd] Add go-to-def metric. (details)
  2. [NFC] Specify C11 in loop-opt-setup.c (details)
Commit 8e36d21fabcd23835d17855025d06946eb0dfb9b by hokein.wu
[clangd] Add go-to-def metric.

to track the number of different "special" go-to-def request.

Differential Revision:
The file was modifiedclang-tools-extra/clangd/XRefs.cpp
Commit 0386f3d4f4183a93d7e029abef8110ae4f148335 by matthew.voss
[NFC] Specify C11 in loop-opt-setup.c

This test was failing in our internal CI, since our driver does not default to
C11. Adding this switch fixes the issue.

Differential Revision:
The file was modifiedclang/test/Misc/loop-opt-setup.c