[llvm] [clang] [llvm][DebugInfo] DWARFv5: static data members declarations are DW_TAG_variable (PR #72234)

[Michael Buch via cfe-commits]

Michael137 wrote:

> @adrian-prantl We do have a pretty strong guarantee of compatibility in the llvm-c API. A new parameter pretty much means you need to define a new function.

Ended not changing the C-API in the relanded version

https://github.com/llvm/llvm-project/pull/72234