Better error handling when the email subsystem isn't working. The

installer was dying trying to send a confirmation email to the initial
user.

lib/mail.php

@@ -71,18 +71,25 @@ function mail_backend()
  */
 function mail_send($recipients, $headers, $body)
 {
+    try {
         // XXX: use Mail_Queue... maybe
         $backend = mail_backend();
+
         if (!isset($headers['Content-Type'])) {
            $headers['Content-Type'] = 'text/plain; charset=UTF-8';
         }
+
         assert($backend); // throws an error if it's bad
         $sent = $backend->send($recipients, $headers, $body);
-    if (PEAR::isError($sent)) {
-        common_log(LOG_ERR, 'Email error: ' . $sent->getMessage());
+        return true;
+    } catch (PEAR_Exception $e) {
+        common_log(
+            LOG_ERR,
+            "Unable to send email - '{$e->getMessage()}'. "
+            . 'Is your mail subsystem set up correctly?'
+        );
         return false;
     }
-    return true;
 }
 
 /**