Take pointer of types

[lynnporu]

Some mechanism of taking pointer of the types should be possible. The example is below.

C code:

/* @enum my_enum
 * @type int
 * @member value1 1
 * @member value2 2
 */
typedef enum {VALUE1 = 1, VALUE2 = 2} my_enum_t;

Python code:

lib.my_enum  # evaluates to ctypes.c_int type
lib.my_enum.ref  # evaluates to ctypes.LP_c_int