patch 8.1.0867: cannot build Python interface with Python 2.4

Problem:    Cannot build Python interface with Python 2.4. (Tom G. Christensen)
Solution:   Define PyBytes_FromStringAndSize. (Ken Takata, closes #3888)
diff --git a/src/version.c b/src/version.c
index 14f1894..92e9805 100644
--- a/src/version.c
+++ b/src/version.c
@@ -784,6 +784,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    867,
+/**/
     866,
 /**/
     865,