[compiler-rt] [asan] Adopt sanitizer_common operator-new framework (PR #196388)

[Justin T. Gibbs via llvm-commits]

scsiguy wrote:

> Drive-by: the PR description and comments are really verbose
@MaskRay, Can you provide any concrete guidance on what would have made either the PR or code comments better? What information reads as superfluous or redundant? What text was confusing or unhelpful? etc.

This is a pretty big behavior change for operator new under the sanitizers (ASAN only here), so I erred on the side of completeness. Happy to adjust, but that's hard to do without knowing what folks think I can safely drop while optimizing for conciseness.


https://github.com/llvm/llvm-project/pull/196388