fix and test that PyLong_Check is true for bools

Author: timfel

graalpython/com.oracle.graal.python.cext/src/boolobject.c

@@ -42,7 +42,7 @@
 
 #include <stdarg.h>
 
-PyTypeObject PyBool_Type = PY_TRUFFLE_TYPE("bool", &PyType_Type, Py_TPFLAGS_DEFAULT, sizeof(struct _longobject));
+PyTypeObject PyBool_Type = PY_TRUFFLE_TYPE("bool", &PyType_Type, Py_TPFLAGS_DEFAULT | Py_TPFLAGS_LONG_SUBCLASS, sizeof(struct _longobject));
 
 // taken from CPython "Python/Objects/boolobject.c"
 PyObject *PyBool_FromLong(long ok) {

graalpython/com.oracle.graal.python.test/src/tests/cpyext/test_abstract.py

@@ -240,6 +240,15 @@ def compile_module(self, name):
         cmpfunc=unhandled_error_compare
     )
 
+    test_PyLong_Check = CPyExtFunction(
+        lambda args: isinstance(args[0], int),
+        _default_unarop_args,
+        resultspec="i",
+        argspec='O',
+        arguments=["PyObject* v"],
+        cmpfunc=unhandled_error_compare
+    )
+
     test_PyNumber_Add = CPyExtFunction(
         lambda args: args[0] + args[1],
         lambda: (