add vendoring with go dep

vendor/github.com/vmware/govmomi/govc/flags/version.go

@@ -0,0 +1,63 @@
+/*
+Copyright (c) 2014 VMware, Inc. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package flags
+
+import (
+	"strconv"
+	"strings"
+)
+
+const Version = "0.15.0"
+
+type version []int
+
+func ParseVersion(s string) (version, error) {
+	v := make(version, 0)
+	ps := strings.Split(s, ".")
+	for _, p := range ps {
+		i, err := strconv.Atoi(p)
+		if err != nil {
+			return nil, err
+		}
+
+		v = append(v, i)
+	}
+
+	return v, nil
+}
+
+func (v version) Lte(u version) bool {
+	lv := len(v)
+	lu := len(u)
+
+	for i := 0; i < lv; i++ {
+		// Everything up to here has been equal and v has more elements than u.
+		if i >= lu {
+			return false
+		}
+
+		// Move to next digit if equal.
+		if v[i] == u[i] {
+			continue
+		}
+
+		return v[i] < u[i]
+	}
+
+	// Equal.
+	return true
+}