The public header files are moved to a new subdirectory, to separate
the definition of the public interface from the actual implementation.
Using an identical directory layout as the final installation has the
advantage that the example code can be build outside the project tree
without any modifications to the #include statements.
The internal memory appears to contain two separate areas. One for the
normal dives and one for the freedives. Currently, only the freedive
section is processed.
