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/privilege/privilege.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 privilege
+
+import (
+	"github.com/pingcap/tidb/context"
+	"github.com/pingcap/tidb/model"
+	"github.com/pingcap/tidb/mysql"
+)
+
+type keyType int
+
+func (k keyType) String() string {
+	return "privilege-key"
+}
+
+// Checker is the interface for check privileges.
+type Checker interface {
+	// Check checks privilege.
+	// If tbl is nil, only check global/db scope privileges.
+	// If tbl is not nil, check global/db/table scope privileges.
+	Check(ctx context.Context, db *model.DBInfo, tbl *model.TableInfo, privilege mysql.PrivilegeType) (bool, error)
+	// Show granted privileges for user.
+	ShowGrants(ctx context.Context, user string) ([]string, error)
+}
+
+const key keyType = 0
+
+// BindPrivilegeChecker binds Checker to context.
+func BindPrivilegeChecker(ctx context.Context, pc Checker) {
+	ctx.SetValue(key, pc)
+}
+
+// GetPrivilegeChecker gets Checker from context.
+func GetPrivilegeChecker(ctx context.Context) Checker {
+	if v, ok := ctx.Value(key).(Checker); ok {
+		return v
+	}
+	return nil
+}