Allow Owners packages to have arbitrarily long names

Summary:
  - Change column type from `sort128` to `sort`.
  - Remove `originalName`. This column is unused. Long ago, we used it to generate a `Thread-Topic` header for mail, but just use PHIDs now (the value just needs to be stable for a given object, users normally don't see it).

Test Plan:
  - Created a package with a beautifully long name. Magnificent!
  - Grepped for `originalName` / `getOriginalName()`, found no Owners hits.
  - Verified that there isn't any name-length validation code to remove.

{F4925637}

Reviewers: chad, amckinley

Reviewed By: chad

Differential Revision: https://secure.phabricator.com/D17798

resources/sql/autopatches/20170427.owners.01.long.sql

@@ -0,0 +1,2 @@
+ALTER TABLE {$NAMESPACE}_owners.owners_package
+  DROP originalName;

src/applications/owners/storage/PhabricatorOwnersPackage.php

@@ -12,7 +12,6 @@ final class PhabricatorOwnersPackage
     PhabricatorNgramsInterface {
 
   protected $name;
-  protected $originalName;
   protected $auditingEnabled;
   protected $autoReview;
   protected $description;
@@ -105,8 +104,7 @@ final class PhabricatorOwnersPackage
       self::CONFIG_TIMESTAMPS => false,
       self::CONFIG_AUX_PHID => true,
       self::CONFIG_COLUMN_SCHEMA => array(
-        'name' => 'sort128',
-        'originalName' => 'text255',
+        'name' => 'sort',
         'description' => 'text',
         'primaryOwnerPHID' => 'phid?',
         'auditingEnabled' => 'bool',
@@ -137,9 +135,6 @@ final class PhabricatorOwnersPackage
 
   public function setName($name) {
     $this->name = $name;
-    if (!$this->getID()) {
-      $this->originalName = $name;
-    }
     return $this;
   }