Integrate public as bindata optionally (#293)

* Dropped unused codekit config

* Integrated dynamic and static bindata for public

* Ignore public bindata

* Add a general generate make task

* Integrated flexible public assets into web command

* Updated vendoring, added all missiong govendor deps

* Made the linter happy with the bindata and dynamic code

* Moved public bindata definition to modules directory

* Ignoring the new bindata path now

* Updated to the new public modules import path

* Updated public bindata command and drop the new prefix

vendor/github.com/pingcap/tidb/kv/version.go

@@ -0,0 +1,51 @@
+// Copyright 2015 PingCAP, Inc.
+//
+// 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,
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package kv
+
+import "math"
+
+// VersionProvider provides increasing IDs.
+type VersionProvider interface {
+	CurrentVersion() (Version, error)
+}
+
+// Version is the wrapper of KV's version.
+type Version struct {
+	Ver uint64
+}
+
+var (
+	// MaxVersion is the maximum version, notice that it's not a valid version.
+	MaxVersion = Version{Ver: math.MaxUint64}
+	// MinVersion is the minimum version, it's not a valid version, too.
+	MinVersion = Version{Ver: 0}
+)
+
+// NewVersion creates a new Version struct.
+func NewVersion(v uint64) Version {
+	return Version{
+		Ver: v,
+	}
+}
+
+// Cmp returns the comparison result of two versions.
+// The result will be 0 if a==b, -1 if a < b, and +1 if a > b.
+func (v Version) Cmp(another Version) int {
+	if v.Ver > another.Ver {
+		return 1
+	} else if v.Ver < another.Ver {
+		return -1
+	}
+	return 0
+}