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.

graph/memstore/testing_memstore.go

@@ -0,0 +1,45 @@
+// 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 memstore
+
+import "github.com/google/cayley/graph"
+
+//    +---+                        +---+
+//    | A |-------               ->| F |<--
+//    +---+       \------>+---+-/  +---+   \--+---+
+//                 ------>|#B#|      |        | E |
+//    +---+-------/      >+---+      |        +---+
+//    | C |             /            v
+//    +---+           -/           +---+
+//      ----    +---+/             |#G#|
+//          \-->|#D#|------------->+---+
+//              +---+
+//
+
+func MakeTestingMemstore() *MemTripleStore {
+	ts := NewMemTripleStore()
+	ts.AddTriple(graph.MakeTriple("A", "follows", "B", ""))
+	ts.AddTriple(graph.MakeTriple("C", "follows", "B", ""))
+	ts.AddTriple(graph.MakeTriple("C", "follows", "D", ""))
+	ts.AddTriple(graph.MakeTriple("D", "follows", "B", ""))
+	ts.AddTriple(graph.MakeTriple("B", "follows", "F", ""))
+	ts.AddTriple(graph.MakeTriple("F", "follows", "G", ""))
+	ts.AddTriple(graph.MakeTriple("D", "follows", "G", ""))
+	ts.AddTriple(graph.MakeTriple("E", "follows", "F", ""))
+	ts.AddTriple(graph.MakeTriple("B", "status", "cool", "status_graph"))
+	ts.AddTriple(graph.MakeTriple("D", "status", "cool", "status_graph"))
+	ts.AddTriple(graph.MakeTriple("G", "status", "cool", "status_graph"))
+	return ts
+}