Merged the int/long unification branch, by very crude means (sorry Thomas!).
I banged on the code (beyond what's in that branch) to make fewer tests fail;
the only tests that fail now are:
  test_descr -- can't pickle ints?!
  test_pickletools -- ???
  test_socket -- See python.org/sf/1619659
  test_sqlite -- ???
I'll deal with those later.
diff --git a/Python/getargs.c b/Python/getargs.c
index f6ddfaa..91d9b47 100644
--- a/Python/getargs.c
+++ b/Python/getargs.c
@@ -720,9 +720,7 @@
 	case 'K': { /* long long sized bitfield */
 		unsigned PY_LONG_LONG *p = va_arg(*p_va, unsigned PY_LONG_LONG *);
 		unsigned PY_LONG_LONG ival;
-		if (PyInt_Check(arg))
-			ival = PyInt_AsUnsignedLongMask(arg);
-		else if (PyLong_Check(arg))
+		if (PyLong_Check(arg))
 			ival = PyLong_AsUnsignedLongLongMask(arg);
 		else
 			return converterr("integer<K>", arg, msgbuf, bufsize);