updated for version 7.2.400
Problem:    Dynamic Ruby is not initialised properly for version 1.9.1.
            Ruby cannot create strings from NULL.
Solution:   Cleanup #ifdefs.  Handle NULL like an empty string.  Add
            ruby_init_stack. (Sergey Khorev)
diff --git a/src/version.c b/src/version.c
index 509237b..bb265a9 100644
--- a/src/version.c
+++ b/src/version.c
@@ -682,6 +682,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    400,
+/**/
     399,
 /**/
     398,