[CMake] fixup_bundles on macosx for non-.app target

[Dan Kegel]

On Sat, Sep 12, 2015 at 1:52 PM, Seth Cantrell <seth.cantrell at gmail.com> wrote:
> I have a project which uses fixup_bundle on Windows to package up the exe with the third-party dlls it requires. On Mac OS X this same packaging process fails. It looks like on Mac OS X this utility is assuming I want to producing a .app bundle.

Given that a .app bundle is just a directory containing the executable and
the things it depends on, what's wrong with what fixup_bundle does?
Do you have a special reason to not want to follow the .app convention?
- Dan