Most likely will just reduce them to C-enums with underlying type.
Otherwise there has to be a mechanism to drop the defs down to them anyways, and eliminate the namespace wraps.
Mostly just cleanup and renaming of certain stuff (mostly in dependencies).
* Changed uw and sw to usize and ssize.
* Removed zpl_cast usage throughout dependencies
* No longer using GEN_DEF_INLINE & GEN_IMPL_INLINE
* header_start.hpp renamed to platform.hpp for depdendencies header.
