reconcile merge

Signed-off-by: Huamin Chen <hchen@redhat.com>

vendor/github.com/petar/GoLLRB/example/ex1.go

@@ -0,0 +1,26 @@
+package main
+
+import (
+	"fmt"
+	"github.com/petar/GoLLRB/llrb"
+)
+
+func lessInt(a, b interface{}) bool { return a.(int) < b.(int) }
+
+func main() {
+	tree := llrb.New(lessInt)
+	tree.ReplaceOrInsert(1)
+	tree.ReplaceOrInsert(2)
+	tree.ReplaceOrInsert(3)
+	tree.ReplaceOrInsert(4)
+	tree.DeleteMin()
+	tree.Delete(4)
+	c := tree.IterAscend()
+	for {
+		u := <-c
+		if u == nil {
+			break
+		}
+		fmt.Printf("%d\n", int(u.(int)))
+	}
+}