This allows symlinking to a copy of `libyabridge.so.` Now we support:
- A symlink to `libyabridge.so` with a `.dll` file in the same directory
as that symlink.
- A symlink to `libyabridge.so` with a symlinked `.dll`.
- A copy of `libyabridge.so` with a `.dll` file in the same directory as
that copy.
- A symlink to a copy of `libyabridge.so` with a `.dll` file in the same
directory as that copy.
- A symlink to a copy of `libyabridge.so` with a symlinked `.dll` file.
That seems a bit overkill, but hey, more options are always better,
right?