devel/llvm16: Update to 16.0.2

Changes: https://discourse.llvm.org/t/llvm-16-0-2-release/70107
Changes: https://discourse.llvm.org/t/16-0-3-release/70341
Changes: https://discourse.llvm.org/t/16-0-4-release/70692
Changes: https://discourse.llvm.org/t/16-0-5-releae/71097
Sponsored by: DARPA

(cherry picked from commit 7ea7349f985c287da8d6a7965697f6a16bd40140)
(cherry picked from commit f186015f22a1160e94779a6d88b159f2d1c10475)
(cherry picked from commit c3af61d7799dae910da12bb778656b47345bc00b)
(cherry picked from commit fc0f58253f01ae034601d73388440be427a32572)