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

[Devon Loehr via llvm-commits]

DKLoehr wrote:

> GlobPattern is also used in binary utilities' symbol/section name matching where we want to be rigid

Thanks for pointing that out! I narrowed the scope of the change so that the parts of the code which want it have to explicitly enable it. Right now that's just the special case list, which is the target of these changes in any case.

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