Reorganize to go get will work

This makes almost no changes to source, but touches every almost file.

Also fixes error in gremlin test code.

init.go

@@ -0,0 +1,40 @@
+// Copyright 2014 The Cayley Authors. 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 cayley
+
+import (
+	cfg "github.com/google/cayley/config"
+	"github.com/google/cayley/graph/leveldb"
+	"github.com/google/cayley/graph/mongo"
+)
+
+func CayleyInit(config *cfg.CayleyConfig, triplePath string) bool {
+	created := false
+	dbpath := config.DatabasePath
+	switch config.DatabaseType {
+	case "mongo", "mongodb":
+		created = mongo.CreateNewMongoGraph(dbpath, config.DatabaseOptions)
+	case "leveldb":
+		created = leveldb.CreateNewLevelDB(dbpath)
+	case "mem":
+		return true
+	}
+	if created && triplePath != "" {
+		ts := OpenTSFromConfig(config)
+		CayleyLoad(ts, config, triplePath, true)
+		ts.Close()
+	}
+	return created
+}