[libunwind] Fix linker flag handling in the tests.

--export-dynamic is not always available on all targets.
-funwind-tables was a duplicate in the lit.site.cfg.in.

Reviewed By: ldionne

Differential Revision: https://reviews.llvm.org/D90202

GitOrigin-RevId: 05598e3d3047cf028cc3e61f3268ff7d999e5f26
2 files changed
tree: c7c0e55a5b0f46fbae7ee3f5317def29b769571b
  1. .clang-format
  2. CMakeLists.txt
  3. LICENSE.TXT
  4. cmake/
  5. docs/
  6. include/
  7. src/
  8. test/