Added sizes.h header
Added sizes.h header

This header has the definition of all the limits presents in the ANSI
specification (C89).

8l/scc,k0gaMSX/kcc,k0gaMSX/scc,k0gaMSX/scc,8l/scc,8l/scc,k0gaMSX/kcc,k0gaMSX/scc