[dev.boringcrypto] misc/boring: add go1.9.3b4 to RELEASES
[dev.boringcrypto] misc/boring: add go1.9.3b4 to RELEASES

Change-Id: Id35acb81b1d8e9cd17d3fe34ebe1395a4d1b6f0a
Reviewed-on: https://go-review.googlesource.com/92195
Run-TryBot: Russ Cox <5ad239cb8a44f659eaaee0aa1ea5b94947abe557@golang.org>
Reviewed-by: Russ Cox <5ad239cb8a44f659eaaee0aa1ea5b94947abe557@golang.org>
TryBot-Result: Gobot Gobot <66cb808b70d30c07676d5e946fee83fd561249e5@golang.org>

nawawi/go,nawawi/go,nawawi/go,golang/go,golang/go,golang/go,nawawi/go,golang/go,golang/go,golang/go,nawawi/go,nawawi/go,nawawi/go,golang/go,golang/go,nawawi/go