Move files in Phabricator one level up

Summary:
- `kill_init.php` said "Moving 1000 files" - I hope that this is not some limit in `FileFinder`.
- [src/infrastructure/celerity] `git mv utils.php map.php; git mv api/utils.php api.php`
- Comment `phutil_libraries` in `.arcconfig` and run `arc liberate`.

NOTE: `arc diff` timed out so I'm pushing it without review.

Test Plan:
/D1234
Browsed around, especially in `applications/repository/worker/commitchangeparser` and `applications/` in general.

Auditors: epriestley

Maniphest Tasks: T1103

src/applications/repository/parser/PhabricatorRepositoryCommitMessageDetailParser.php

@@ -0,0 +1,113 @@
+<?php
+
+/*
+ * Copyright 2012 Facebook, 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.
+ */
+
+abstract class PhabricatorRepositoryCommitMessageDetailParser {
+
+  private $commit;
+  private $commitData;
+
+  final public function __construct(
+    PhabricatorRepositoryCommit $commit,
+    PhabricatorRepositoryCommitData $data) {
+    $this->commit = $commit;
+    $this->commitData = $data;
+  }
+
+  final public function getCommit() {
+    return $this->commit;
+  }
+
+  final public function getCommitData() {
+    return $this->commitData;
+  }
+
+  /**
+   * Try to link a commit name to a Phabricator account. Basically we throw it
+   * at the wall and see if something sticks.
+   */
+  public function resolveUserPHID($user_name) {
+    if (!strlen($user_name)) {
+      return null;
+    }
+
+    $phid = $this->findUserByUserName($user_name);
+    if ($phid) {
+      return $phid;
+    }
+    $phid = $this->findUserByEmailAddress($user_name);
+    if ($phid) {
+      return $phid;
+    }
+    $phid = $this->findUserByRealName($user_name);
+    if ($phid) {
+      return $phid;
+    }
+
+    // No hits yet, try to parse it as an email address.
+
+    $email = new PhutilEmailAddress($user_name);
+
+    $phid = $this->findUserByEmailAddress($email->getAddress());
+    if ($phid) {
+      return $phid;
+    }
+
+    $display_name = $email->getDisplayName();
+    if ($display_name) {
+      $phid = $this->findUserByRealName($display_name);
+      if ($phid) {
+        return $phid;
+      }
+    }
+
+    return null;
+  }
+
+  abstract public function parseCommitDetails();
+
+  private function findUserByUserName($user_name) {
+    $by_username = id(new PhabricatorUser())->loadOneWhere(
+      'userName = %s',
+      $user_name);
+    if ($by_username) {
+      return $by_username->getPHID();
+    }
+    return null;
+  }
+
+  private function findUserByRealName($real_name) {
+    // Note, real names are not guaranteed unique, which is why we do it this
+    // way.
+    $by_realname = id(new PhabricatorUser())->loadOneWhere(
+      'realName = %s LIMIT 1',
+      $real_name);
+    if ($by_realname) {
+      return $by_realname->getPHID();
+    }
+    return null;
+  }
+
+  private function findUserByEmailAddress($email_address) {
+    $by_email = PhabricatorUser::loadOneWithEmailAddress($email_address);
+    if ($by_email) {
+      return $by_email->getPHID();
+    }
+    return null;
+  }
+
+}