Aphlict should respect the PATH set in the config.

Reviewed by: epriestley

scripts/__init_script__.php

@@ -78,3 +78,11 @@ $translation = PhabricatorEnv::newObjectFromConfig('translation.provider');
 PhutilTranslator::getInstance()
   ->setLanguage($translation->getLanguage())
   ->addTranslations($translation->getTranslations());
+
+// Append any paths to $PATH if we need to.
+$paths = PhabricatorEnv::getEnvConfig('environment.append-paths');
+if (!empty($paths)) {
+  $current_env_path = getenv('PATH');
+  $new_env_paths = implode(':', $paths);
+  putenv('PATH='.$current_env_path.':'.$new_env_paths);
+}