[clang] [lld] [llvm] Rename -macosx_version_min to -macos_version_min (PR #88810)

[Leland Jansen via cfe-commits]

lelandjansen wrote:

> How are we ending up in this code path?

@JDevlieghere We're trying to build a release on macOS following [these steps](https://github.com/llvm/llvm-project/blob/5e6bb1fb885abec2e8bc85422bbd83fe4ece6d3b/llvm/docs/ReleaseProcess.rst#L54) and are getting a linker warning for the outdated flag name.

E.g., (from test-release.sh)

```
/path/to/llvm-project/final/Phase2/Release/llvmCore-18.1.3-final.install/usr/local/bin/clang  -fPIC -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic -Wno-long-long -Wc++98-compat-extra-semi -Wimplicit-fallthrough -Wcovered-switch-default -Wstring-conversion -Wmisleading-indentation -Wctad-maybe-unsupported -Wall -fcolor-diagnostics -Wcast-qual -Wformat-pedantic -Wimplicit-fallthrough -Wsign-compare -Wno-enum-constexpr-conversion -Wno-extra -Wno-pedantic -fno-semantic-interposition -fdata-sections -O3 -DNDEBUG -arch arm64 -isysroot /Applications/Xcode-15.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX14.0.sdk -mmacosx-version-min=10.15 -dynamiclib -Wl,-headerpad_max_install_names -current_version 5.0 -compatibility_version 5.0 -o ../../../../lib/libomp.dylib -install_name @rpath/libomp.dylib CMakeFiles/omp.dir/kmp_alloc.cpp.o CMakeFiles/omp.dir/kmp_atomic.cpp.o CMakeFiles/omp.dir/kmp_csupport.cpp.o CMakeFiles/omp.dir/kmp_debug.cpp.o CMakeFiles/omp.dir/kmp_itt.cpp.o CMakeFiles/omp.dir/kmp_environment.cpp.o CMakeFiles/omp.dir/kmp_error.cpp.o CMakeFiles/omp.dir/kmp_global.cpp.o CMakeFiles/omp.dir/kmp_i18n.cpp.o CMakeFiles/omp.dir/kmp_io.cpp.o CMakeFiles/omp.dir/kmp_runtime.cpp.o CMakeFiles/omp.dir/kmp_settings.cpp.o CMakeFiles/omp.dir/kmp_str.cpp.o CMakeFiles/omp.dir/kmp_tasking.cpp.o CMakeFiles/omp.dir/kmp_threadprivate.cpp.o CMakeFiles/omp.dir/kmp_utility.cpp.o CMakeFiles/omp.dir/kmp_barrier.cpp.o CMakeFiles/omp.dir/kmp_wait_release.cpp.o CMakeFiles/omp.dir/kmp_affinity.cpp.o CMakeFiles/omp.dir/kmp_dispatch.cpp.o CMakeFiles/omp.dir/kmp_lock.cpp.o CMakeFiles/omp.dir/kmp_sched.cpp.o CMakeFiles/omp.dir/kmp_collapse.cpp.o CMakeFiles/omp.dir/z_Linux_util.cpp.o CMakeFiles/omp.dir/kmp_gsupport.cpp.o CMakeFiles/omp.dir/thirdparty/ittnotify/ittnotify_static.cpp.o CMakeFiles/omp.dir/kmp_taskdeps.cpp.o CMakeFiles/omp.dir/kmp_cancel.cpp.o CMakeFiles/omp.dir/kmp_ftn_cdecl.cpp.o CMakeFiles/omp.dir/kmp_ftn_extra.cpp.o CMakeFiles/omp.dir/kmp_version.cpp.o "CMakeFiles/omp.dir/ompt-general.cpp.o" CMakeFiles/omp.dir/z_Linux_asm.S.o
```

https://github.com/llvm/llvm-project/pull/88810