Make British spelling stricter

Summary: This is pretty lame but I didn't have a better idea.

Test Plan:
  $ arc test # previously translated as list
  $ arc lst
  $ arc brnach

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D4773

src/configuration/ArcanistConfiguration.php

@@ -204,7 +204,7 @@ class ArcanistConfiguration {
     asort($distances);
     $best = min($max_distance, reset($distances));
     foreach ($distances as $option => $distance) {
-      if ($distance > $best) {
+      if ($distance > $best || strlen($option) <= 2 * $distance) {
         unset($distances[$option]);
       }
     }