Part of SF patch #102409 by jlt63 to support building these modules

under CYGWIN as shared libraries (DLLs).

Modules/mmapmodule.c

@@ -952,13 +952,7 @@ static struct PyMethodDef mmap_functions[] = {
 	{NULL,		NULL}	     /* Sentinel */
 };
 
-#ifdef MS_WIN32
-__declspec(dllexport) void
-#endif /* MS_WIN32 */
-#ifdef UNIX
-extern void
-#endif
-
+DL_EXPORT(void)
 initmmap(void)
 {
 	PyObject *dict, *module;

Modules/readline.c

@@ -27,6 +27,9 @@
 #else
 #include <readline/readline.h> /* You may need to add an -I option to Setup */
 
+#ifdef __CYGWIN__
+#include <readline/history.h>
+#else /* !__CYGWIN__ */
 extern int rl_parse_and_bind(char *);
 extern int rl_read_init_file(char *);
 extern int rl_insert_text(char *);
@@ -38,11 +41,12 @@ extern int read_history(char *);
 extern int write_history(char *);
 extern int history_truncate_file(char *, int);
 extern Function *rl_event_hook;
+#endif /* !__CYGWIN__ */
 #endif
 
 /* Pointers needed from outside (but not declared in a header file). */
-extern int (*PyOS_InputHook)(void);
-extern char *(*PyOS_ReadlineFunctionPointer)(char *);
+extern DL_IMPORT(int) (*PyOS_InputHook)(void);
+extern DL_IMPORT(char) *(*PyOS_ReadlineFunctionPointer)(char *);
 
 
 /* Exported function to send one line to readline's init file parser */

Modules/rotormodule.c

@@ -576,7 +576,7 @@ rotorobj_getattr(Rotorobj *s, char *name)
 
 
 statichere PyTypeObject Rotor_Type = {
-	PyObject_HEAD_INIT(&PyType_Type)
+	PyObject_HEAD_INIT(NULL)
 	0,				/*ob_size*/
 	"rotor",			/*tp_name*/
 	sizeof(Rotorobj),		/*tp_size*/
@@ -619,5 +619,6 @@ rotor_methods[] = {
 DL_EXPORT(void)
 initrotor(void)
 {
+	Rotor_Type.ob_type = &PyType_Type;
 	(void)Py_InitModule("rotor", rotor_methods);
 }

Modules/shamodule.c

@@ -529,7 +529,7 @@ static struct PyMethodDef SHA_functions[] = {
 	if (o!=NULL) PyDict_SetItemString(d,n,o); \
 	Py_XDECREF(o); }
 
-void
+DL_EXPORT(void)
 initsha(void)
 {
     PyObject *d, *m;