updated for version 7.4.570
Problem:    Building with dynamic library does not work for Ruby 2.2.0
Solution:   Change #ifdefs and #defines. (Ken Takata)
diff --git a/src/version.c b/src/version.c
index a1b1494..b6e7556 100644
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    570,
+/**/
     569,
 /**/
     568,