Merge pull request #3193 from hashicorp/b-blake2b-386-arch

Vendor blake2b to allow for building on x386 architecture

vendor/golang.org/x/crypto/blake2b/blake2b_ref.go

@@ -0,0 +1,11 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !amd64 appengine gccgo
+
+package blake2b
+
+func hashBlocks(h *[8]uint64, c *[2]uint64, flag uint64, blocks []byte) {
+	hashBlocksGeneric(h, c, flag, blocks)
+}

vendor/vendor.json

@@ -1293,10 +1293,10 @@
 			"revisionTime": "2017-06-05T21:53:11Z"
 		},
 		{
-			"checksumSHA1": "pE9lQ5mMiW10+m6CS9XQDhSACNU=",
+			"checksumSHA1": "5TlXhxVMqfHQKpCKucmXNeE6/kc=",
 			"path": "golang.org/x/crypto/blake2b",
-			"revision": "eb71ad9bd329b5ac0fd0148dd99bd62e8be8e035",
-			"revisionTime": "2017-08-07T10:11:13Z"
+			"revision": "74b34b9dd60829a9fcaf56a59e81c3877a8ecd2c",
+			"revisionTime": "2017-09-02T17:19:23Z"
 		},
 		{
 			"checksumSHA1": "nqWNlnMmVpt628zzvyo6Yv2CX5Q=",