unic is a small library of C functions that is currently written
in plain C. It's purpose isn't to be fast, but "universal" - as
in include as little architecture-specific code as possible.
The old neatlibc still resides, but isn't being built. There is
still more to do, including implementation of memory management,
so keep it there for now.
Signed-off-by: Ivaylo Ivanov <ivo.ivanov.ivanov1@gmail.com>