Merge llvm-project release/17.x llvmorg-17.0.3-0-g888437e1b600
This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvmorg-17.0.3-0-g888437e1b600.
PR: 273753
MFC after: 1 month
(cherry picked from commit bdb86d1a853a919764f65fdedcea76d76e4d619b)