[libunwind][Haiku] Improve support (#115462)

* Signal frame unwinding on x86_64 from X512
* Header search for commpage_defs.h on non-standard paths

Unwind supported tests pass on Haiku x86_64

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Co-authored-by: Trung Nguyen <trungnt282910@gmail.com>
GitOrigin-RevId: 3b904ae5ac5e9d759f3629e9a6b98f14bbfb304c
2 files changed
tree: 0231e2390851a78870ecfe0b0be5202c213c1f9c
  1. cmake/
  2. docs/
  3. include/
  4. src/
  5. test/
  6. .clang-format
  7. CMakeLists.txt
  8. LICENSE.TXT