[release-branch.go1.5] go1.5.1

Change-Id: I98d9fefd923e2a35031385045382ba372f1d614a
Reviewed-on: https://go-review.googlesource.com/14401
Reviewed-by: Andrew Gerrand <adg@golang.org>
diff --git a/VERSION b/VERSION
index 661b4f9..77af434 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-go1.5
\ No newline at end of file
+go1.5.1
\ No newline at end of file