[clang] [Clang] Add "extend lifetime" flags and release note (PR #110000)

[Stephen Tozer via cfe-commits]

SLTozer wrote:

Merged in [71ab44a8](https://github.com/llvm/llvm-project/commit/71ab44a8193c56e4ef9aede4d9bac8e14760c6c6), via command line so as to provide proper commit author attribution to @wolfy1961 (as this doesn't seem to be possible via the web interface).

https://github.com/llvm/llvm-project/pull/110000