vendor/golang.org/x/text: Vendor collate and language

Following the vndr docs [1]:

  $ go get -u github.com/LK4D4/vndr
  $ vndr golang.org/x/text
  $ git add -A vendor/golang.org/x/text

The targeted 'git add' was because we seem to have versioned some test
files (e.g. vendor/github.com/varlink/go/varlink/varlink_test.go in
8493dba2 (Initial varlink implementation, 2018-03-26, #627).  I don't
know why, possibly an old vndr version?  But either way, I'm punting
that particular issue to a separate branch.

[1]: https://github.com/LK4D4/vndr/blob/1fc68ee0c852556a9ed53cbde16247033f104111/README.md

Signed-off-by: W. Trevor King <wking@tremily.us>

Closes: #686
Approved by: mheon

1 files changed, 38 insertions, 0 deletions

diff --git a/vendor/golang.org/x/text/language/go1_1.go b/vendor/golang.org/x/text/language/go1_1.go
new file mode 100644
index 000000000..380f4c09f
--- /dev/null
+++ b/vendor/golang.org/x/text/language/go1_1.go
@@ -0,0 +1,38 @@
+// Copyright 2013 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 !go1.2
+
+package language
+
+import "sort"
+
+func sortStable(s sort.Interface) {
+	ss := stableSort{
+		s:   s,
+		pos: make([]int, s.Len()),
+	}
+	for i := range ss.pos {
+		ss.pos[i] = i
+	}
+	sort.Sort(&ss)
+}
+
+type stableSort struct {
+	s   sort.Interface
+	pos []int
+}
+
+func (s *stableSort) Len() int {
+	return len(s.pos)
+}
+
+func (s *stableSort) Less(i, j int) bool {
+	return s.s.Less(i, j) || !s.s.Less(j, i) && s.pos[i] < s.pos[j]
+}
+
+func (s *stableSort) Swap(i, j int) {
+	s.s.Swap(i, j)
+	s.pos[i], s.pos[j] = s.pos[j], s.pos[i]
+}