Improve Array(Pointer(T), _) or Pointer(Array(T, _)) declaration type desugaring according to cdecl

[arian]

The desugaring of declarations does not always give the right type to variable according to the declaration.

Some examples of cdecl:

$ cdecl 
Type `help' or `?' for help
cdecl> explain int*
syntax error
cdecl> explain int* a;
declare a as pointer to int
cdecl> explain int *a[];
declare a as array of pointer to int
cdecl> explain int (*a)[];
declare a as pointer to array of int
cdecl> explain int (*a)(int);
declare a as pointer to function (int) returning int
cdecl> explain float (*a)(int);
declare a as pointer to function (int) returning float
cdecl> explain float (*a)(int *);
declare a as pointer to function (pointer to int) returning float