Make includes relative, change namespace, support unity build

Subtrees/hyperleveldb/db/version_edit_test.cc

@@ -2,10 +2,10 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file. See the AUTHORS file for names of contributors.
 
-#include "db/version_edit.h"
-#include "util/testharness.h"
+#include "version_edit.h"
+#include "../util/testharness.h"
 
-namespace leveldb {
+namespace hyperleveldb {
 
 static void TestEncodeDecode(const VersionEdit& edit) {
   std::string encoded, encoded2;
@@ -39,7 +39,7 @@ TEST(VersionEditTest, EncodeDecode) {
   TestEncodeDecode(edit);
 }
 
-}  // namespace leveldb
+}  // namespace hyperleveldb
 
 int main(int argc, char** argv) {
   return leveldb::test::RunAllTests();