[release-branch.go1.8] go1.8rc2

Change-Id: Ifcf2e13b962aa10280df8ca76cb21b37e3533f8f
Reviewed-on: https://go-review.googlesource.com/35475
Run-TryBot: Chris Broadfoot <cbro@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

VERSION

-go1.8rc1
\ No newline at end of file
+go1.8rc2
\ No newline at end of file