Vendor update

vendor/golang.org/x/text/secure/precis/profiles.go

@@ -0,0 +1,56 @@
+// Copyright 2015 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.
+
+package precis
+
+import (
+	"unicode"
+
+	"golang.org/x/text/runes"
+	"golang.org/x/text/transform"
+	"golang.org/x/text/unicode/norm"
+)
+
+var (
+	Nickname              *Profile = nickname          // Implements the Nickname profile specified in RFC 7700.
+	UsernameCaseMapped    *Profile = usernameCaseMap   // Implements the UsernameCaseMapped profile specified in RFC 7613.
+	UsernameCasePreserved *Profile = usernameNoCaseMap // Implements the UsernameCasePreserved profile specified in RFC 7613.
+	OpaqueString          *Profile = opaquestring      // Implements the OpaqueString profile defined in RFC 7613 for passwords and other secure labels.
+)
+
+// TODO: mvl: "Ultimately, I would manually define the structs for the internal
+// profiles. This avoid pulling in unneeded tables when they are not used."
+var (
+	nickname = NewFreeform(
+		AdditionalMapping(func() transform.Transformer {
+			return &nickAdditionalMapping{}
+		}),
+		IgnoreCase,
+		Norm(norm.NFKC),
+		DisallowEmpty,
+	)
+	usernameCaseMap = NewIdentifier(
+		FoldWidth,
+		FoldCase(),
+		Norm(norm.NFC),
+		BidiRule,
+	)
+	usernameNoCaseMap = NewIdentifier(
+		FoldWidth,
+		Norm(norm.NFC),
+		BidiRule,
+	)
+	opaquestring = NewFreeform(
+		AdditionalMapping(func() transform.Transformer {
+			return runes.Map(func(r rune) rune {
+				if unicode.Is(unicode.Zs, r) {
+					return ' '
+				}
+				return r
+			})
+		}),
+		Norm(norm.NFC),
+		DisallowEmpty,
+	)
+)