[llvm] [ORC] Add LoadRelocatableObject: universal binary support, clearer er… (PR #104406)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-arm64-windows-msvc` running on `linaro-armv8-windows-msvc-04` while building `llvm` at step 5 "ninja check 1".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/161/builds/1336

Here is the relevant piece of the build log for the reference:
```
Step 5 (ninja check 1) failure: stage 1 checked (failure)
******************** TEST 'LLVM :: ExecutionEngine/JITLink/Generic/MachO_universal_binaries.test' FAILED ********************
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 1
c:\users\tcwg\llvm-worker\clang-arm64-windows-msvc\stage1\bin\llc.exe -filetype=obj -mtriple x86_64-apple-macosx -o C:\Users\tcwg\llvm-worker\clang-arm64-windows-msvc\stage1\test\ExecutionEngine\JITLink\Generic\Output\MachO_universal_binaries.test.tmp.x86-64.o    C:\Users\tcwg\llvm-worker\clang-arm64-windows-msvc\llvm\llvm\test\ExecutionEngine\JITLink\Generic/Inputs/main-ret-0.ll
# executed command: 'c:\users\tcwg\llvm-worker\clang-arm64-windows-msvc\stage1\bin\llc.exe' -filetype=obj -mtriple x86_64-apple-macosx -o 'C:\Users\tcwg\llvm-worker\clang-arm64-windows-msvc\stage1\test\ExecutionEngine\JITLink\Generic\Output\MachO_universal_binaries.test.tmp.x86-64.o' 'C:\Users\tcwg\llvm-worker\clang-arm64-windows-msvc\llvm\llvm\test\ExecutionEngine\JITLink\Generic/Inputs/main-ret-0.ll'
# .---command stderr------------
# | c:\users\tcwg\llvm-worker\clang-arm64-windows-msvc\stage1\bin\llc.exe: error: unable to get target for 'x86_64-apple-macosx', see --version and --triple.
# `-----------------------------
# error: command failed with exit status: 1

--

********************


```

https://github.com/llvm/llvm-project/pull/104406