[lldb] Suppport testing with debug-python on Windows (#140443)

When trying to run the LLDB API tests on Windows with a debug
configuration, they fail, because the `_lldb` module won't be found. As
explained in https://github.com/llvm/llvm-project/issues/51272, this is
because lit will run the test with `python.exe` but the module is built
for the debug version of python, `python_d.exe`.

CMake already resolved the debug executable in
`Python3_EXECUTABLE_DEBUG`, so this PR changes the
`config.python_executable` to point to `python_d.exe` on Windows in
debug mode.

The check is equivalent to the one done in the top-level LLDB CMakeLists
[when setting the python
suffix](https://github.com/llvm/llvm-project/blob/3ccb15d6caf57f2a866d496ada2fb52d14b179d2/lldb/CMakeLists.txt#L79-L86).
2 files changed
tree: aae8b96299406e8df5503da44e65096a748eca72
  1. .ci/
  2. .github/
  3. bolt/
  4. clang/
  5. clang-tools-extra/
  6. cmake/
  7. compiler-rt/
  8. cross-project-tests/
  9. flang/
  10. flang-rt/
  11. libc/
  12. libclc/
  13. libcxx/
  14. libcxxabi/
  15. libunwind/
  16. lld/
  17. lldb/
  18. llvm/
  19. llvm-libgcc/
  20. mlir/
  21. offload/
  22. openmp/
  23. polly/
  24. pstl/
  25. runtimes/
  26. third-party/
  27. utils/
  28. .clang-format
  29. .clang-format-ignore
  30. .clang-tidy
  31. .git-blame-ignore-revs
  32. .gitattributes
  33. .gitignore
  34. .mailmap
  35. CODE_OF_CONDUCT.md
  36. CONTRIBUTING.md
  37. LICENSE.TXT
  38. pyproject.toml
  39. README.md
  40. SECURITY.md
README.md

The LLVM Compiler Infrastructure

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