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

[Vitaly Buka via llvm-commits]

https://github.com/vitalybuka commented:

I'd like to optimize SanitizerSpecialCaseList so we sort by prefixes/suffixes to limit applied matches.

IsSlashAgnostic will be needed to taken into account soring.
Which is possible.

Would be simple just normalize patters on load?
Same for queries?

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