Add standard header preamble and footer, a-la intobject.h. Main purpose is extern "C" for C++ programs.
diff --git a/Include/boolobject.h b/Include/boolobject.h
index 5bbe969..4e5b99f 100644
--- a/Include/boolobject.h
+++ b/Include/boolobject.h
@@ -1,5 +1,12 @@
/* Boolean object interface */
+#ifndef Py_BOOLOBJECT_H
+#define Py_BOOLOBJECT_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
typedef PyIntObject PyBoolObject;
extern DL_IMPORT(PyTypeObject) PyBool_Type;
@@ -18,3 +25,8 @@
/* Function to return a bool from a C long */
PyObject *PyBool_FromLong(long);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_BOOLOBJECT_H */