[release-branch.go1.6] go1.6.3

Change-Id: Ib8cc2acc44c94ef0f85be001c5914f29606dd80b
Reviewed-on: https://go-review.googlesource.com/25016
Run-TryBot: Chris Broadfoot <cbro@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

VERSION

diff --git a/VERSION b/VERSION
index 17df20d..278d291 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-go1.6.2
\ No newline at end of file
+go1.6.3
\ No newline at end of file