[clang] [llvm] Make sanitizer special case list slash-agnostic (PR #149886)

[Fangrui Song via llvm-commits]

MaskRay wrote:

GlobPattern is also used in binary utilities' symbol/section name matching where we want to be rigid. While I do not oppose to this change, I think it should be opt-in if we add it.

https://github.com/llvm/llvm-project/pull/149886