[release-branch.go1.7] go1.7rc2

Change-Id: I5473071f672f8352fbd3352e158d5be12823b58a
Reviewed-on: https://go-review.googlesource.com/25017
Run-TryBot: Chris Broadfoot <cbro@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

VERSION

diff --git a/VERSION b/VERSION
index e0b63c7..240b370 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-go1.7rc1
\ No newline at end of file
+go1.7rc2
\ No newline at end of file