Change unsigned to Py_ssize_t, removed Py_UNICODE declaration.

Cython/Includes/cpython/array.pxd

@@ -58,7 +58,6 @@ from cpython.ref cimport PyTypeObject
 from cpython.exc cimport PyErr_BadArgument
 
 cdef extern from "arrayarray.h":
-    ctypedef short Py_UNICODE
     ctypedef class array.array [object arrayobject]
     ctypedef object GETF(array a, Py_ssize_t ix)
     ctypedef object SETF(array a, Py_ssize_t ix, object o)
@@ -73,7 +72,7 @@ cdef extern from "arrayarray.h":
         
         cdef:
             PyTypeObject* ob_type
-            unsigned length         # == ob_size (by union)
+            Py_ssize_t length       # == ob_size (by union)
             arraydescr* ob_descr    # struct arraydescr *ob_descr;
 
             # views of ob_item:

Cython/Includes/cpython/arrayarray.h

@@ -35,8 +35,7 @@ typedef struct arraydescr {
 typedef struct arrayobject {
     PyObject_HEAD
     union {
-        Py_ssize_t ob_size;
-        unsigned length;
+        Py_ssize_t ob_size, length;
     };
     union {
         char *ob_item;