[clang] Diagnose problematic uses of constructor/destructor attribute (PR #67673)

[Aaron Ballman via cfe-commits]

AaronBallman wrote:

This is another pass at https://github.com/llvm/llvm-project/pull/67360

Note: llvm-libc will still have a test failure until I figure out the correct way to repair init_fini_array_test.cpp. I *think* I made the correct changes in compiler-rt's CMake so that all of the compiler-rt projects can use reserved priorities, but I'd appreciate confirmation from @MaskRay on those changes.

https://github.com/llvm/llvm-project/pull/67673