iOS Framework includes

edit

Is there a reason for this?
The C interface actually works fine when the headers are replaced. Is there any (core) functionality that should not work on iOS?

All C functions should work on iOS, but C interface is obsolete. We are trying to teach all OpenCV users to use new C++ interface. It is more powerful and more easy.

Teaching is good, but there's still a large amount of existing ("legacy") code out there. Making sure older APIs still work is essential for any gradual transition of a system.