[clang] [llvm] [libclang][Cygwin] Provide unversioned DLL file alongside versioned one (PR #147132)

[via cfe-commits]

jeremyd2019 wrote:

https://cygwin.com/pipermail/cygwin-apps/2025-July/044448.html

Perhaps what needs to be done is create the symlink only in the build directory (for the tests) and not try to install symlinks for Cygwin, and then patch the python bindings with the so version like https://cygwin.com/cgit/cygwin-packages/python-clang/tree/3.7.1-cygwin-ctypes.patch?h=main&id=881059a01e31dfe7d3caac9846c419a78342e236 does?

https://github.com/llvm/llvm-project/pull/147132