[libunwind] Simplify the executor used in the tests

Instead of going through libc++'s run.py, we can simply run the executable
directly since we don't need to setup a working directory or control the
environment.

Differential Revision: https://reviews.llvm.org/D112649

GitOrigin-RevId: 3e39bbf5f9614327bb09d6527db8b40fc472fedf
2 files changed
tree: 7d415a2e4601deca20765f9b7f1209572b625bc9
  1. .clang-format
  2. CMakeLists.txt
  3. LICENSE.TXT
  4. cmake/
  5. docs/
  6. include/
  7. src/
  8. test/