Add 3.8 curses patch

Patch Python 3.8's _cursesmodule.c to be compatible with PDCurses.

Author: ulfalizer

py38/_cursesmodule.c

@@ -109,6 +109,10 @@ static const char PyCursesVersion[] = "2.2";
 #define STRICT_SYSV_CURSES
 #endif
 
+#ifdef _WIN32
+#include <windows.h>
+#endif
+
 #define CURSES_MODULE
 #include "py_curses.h"
 
@@ -2621,7 +2625,7 @@ _curses_color_pair_impl(PyObject *module, short color_number)
     PyCursesInitialised;
     PyCursesInitialisedColor;
 
-    return  PyLong_FromLong((long) (color_number << 8));
+    return  PyLong_FromLong(COLOR_PAIR(color_number));
 }
 
 /*[clinic input]
@@ -3204,7 +3208,9 @@ static PyObject *
 _curses_setupterm_impl(PyObject *module, const char *term, int fd)
 /*[clinic end generated code: output=4584e587350f2848 input=8ac5f78ec6268be3]*/
 {
+#ifndef _WIN32
     int err;
+#endif
 
     if (fd == -1) {
         PyObject* sys_stdout;
@@ -3225,6 +3231,7 @@ _curses_setupterm_impl(PyObject *module, const char *term, int fd)
         }
     }
 
+#ifndef _WIN32
     if (!initialised_setupterm && setupterm((char *)term, fd, &err) == ERR) {
         const char* s = "setupterm: unknown error";
 
@@ -3237,6 +3244,7 @@ _curses_setupterm_impl(PyObject *module, const char *term, int fd)
         PyErr_SetString(PyCursesError,s);
         return NULL;
     }
+#endif
 
     initialised_setupterm = TRUE;