[compiler-rt] [scudo] Add hooks to mark the range of realloc (PR #74353)

[Fabio D'Urso via llvm-commits]

https://github.com/fabio-d approved this pull request.

Thanks @ChiaHungDuan and @cferris1000. This new revision solves my problem of tracking memory precisely even while it's being reallocated.

https://github.com/llvm/llvm-project/pull/74353