[clang] [llvm] [transforms] Inline simple variadic functions (PR #81058)

[Jon Chesterfield via cfe-commits]

JonChesterfield wrote:

Patch run through `clang-tidy --checks=readability-identifier-naming` with the config file in tree and recommendations applied. Some of the choices seem poor but it's presumably acceptable.

https://github.com/llvm/llvm-project/pull/81058