server: Move all the top level files into cmd folder. (#2490)

This change brings a change which was done for the 'mc'
package to allow for clean repo and have a cleaner
github drop in experience.

cmd/commands.go

@@ -0,0 +1,44 @@
+/*
+ * Minio Cloud Storage, (C) 2015 Minio, 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,
+ * 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 cmd
+
+import "github.com/minio/cli"
+
+// Collection of minio commands currently supported are.
+var commands = []cli.Command{}
+
+// Collection of minio commands currently supported in a trie tree.
+var commandsTree = newTrie()
+
+// Collection of minio flags currently supported.
+var globalFlags = []cli.Flag{
+	cli.StringFlag{
+		Name:  "config-dir, C",
+		Value: mustGetConfigPath(),
+		Usage: "Path to configuration folder.",
+	},
+	cli.BoolFlag{
+		Name:  "quiet",
+		Usage: "Suppress chatty output.",
+	},
+}
+
+// registerCommand registers a cli command.
+func registerCommand(command cli.Command) {
+	commands = append(commands, command)
+	commandsTree.Insert(command.Name)
+}