Macros to ease programming of variadic functions

Collaboration diagram for Macros to ease programming of variadic functions:

Defines
#define	P99_FSYMB(NAME)   P00_FSYMB(NAME)
	Mangle NAME.
#define	P99_LENGTH_ARR_ARG(T,...)   ((size_t)P99_NARG(__VA_ARGS__)), (T[]){ __VA_ARGS__ }
	Helper macro to declare a variable length parameter list.
#define	P99_LENGTH_VA_ARG(...)   ((size_t)P99_NARG(__VA_ARGS__)), __VA_ARGS__
	Meta-macro to generate calls to functions with variable argument list.
#define	P99_VA_ARGS(X)   size_t X /*!< the number of arguments that follow */, ...
	Helper macro to declare a variable length parameter list.