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

[via llvm-commits]

jeremyd2019 wrote:

I tested this and it broke things for me.  This turns cygLLVM-20.dll into a symlink, this doesn't work with existing binaries because DLLs in the import table can't follow the Cygwin symlinks (they're loaded by the Windows loader).  Also, I may have screwed something up, but I'm not getting the libclang symlink in the install.

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