Improve daemon "waiting" message, config reload behavior

Summary:
Ref T12298. Two minor daemon improvements:

- Make the "waiting" message reflect hibernation.
- Don't trigger a reload right after launching.

Test Plan:
- Read "waiting" message.
- Ran "bin/phd start", didn't see an immediate SIGHUP in the log.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T12298

Differential Revision: https://secure.phabricator.com/D17550

src/applications/daemon/controller/PhabricatorDaemonLogViewController.php

···
       case PhabricatorDaemonLog::STATUS_WAIT:
         $details = pht(
           'This daemon is running normally and reported a status update '.
-          'recently (within %s). However, it encountered an error while '.
-          'doing work and is waiting a little while (%s) to resume '.
-          'processing. After encountering an error, daemons wait before '.
-          'resuming work to avoid overloading services.',
-          phutil_format_relative_time($unknown_time),
-          phutil_format_relative_time($wait_time));
+          'recently (within %s). The process is currently waiting to '.
+          'restart, either because it is hibernating or because it '.
+          'encountered an error.',
+          phutil_format_relative_time($unknown_time));
         break;
       case PhabricatorDaemonLog::STATUS_EXITING:
         $details = pht('This daemon is shutting down gracefully.');

src/infrastructure/daemon/overseer/PhabricatorDaemonOverseerModule.php

···
 
     $this->configVersion = $new_version;
 
+    // Don't trigger a reload if we're loading the config for the very
+    // first time.
+    if ($old_version === null) {
+      return false;
+    }
+
     return ($old_version != $new_version);
   }