reverted the envelope address setting patch

This implementation proved to be troublesome on certain setups. Instead of
breaking possibly a *lot* of working setups to fix a few other systems, we
decided to revert to the previous behavior. Users which can't use this
method for sending mails should consider the swiftmail plugin.

darcs-hash:20081013171949-7ad00-83c336824da6e5428b7d8e06aea7e6d8e8a24f58.gz

inc/mail.php

@@ -90,12 +90,6 @@ function _mail_send_action($data) {
   // No named recipients for To: in Windows (see FS#652)
   $usenames = (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') ? false : true;
 
-  // On Unix set the envelope headers correctly:
-  if($usenames){
-    if($from) $params = ((string) $params).' -f '.escapeshellarg(mail_encode_address($from,'',false));
-    if($to)   $params = ((string) $params).' '.escapeshellarg(mail_encode_address($to,'',false));
-  }
-
   $to = mail_encode_address($to,'',$usenames);
   $header .= mail_encode_address($from,'From');
   $header .= mail_encode_address($cc,'Cc');