fix for encoding email addresses

There was a problem in the mail header builder which left out a space between
real names and the email address, which broke certain mailers.

darcs-hash:20070613153201-7ad00-df21a26f31a199c2a1e8754d76b23afcf7981539.gz

inc/mail.php

@@ -132,7 +132,7 @@ function mail_encode_address($string,$header='',$names=true){
 
     // add to header comma seperated and in new line to avoid too long headers
     if($headers != '') $headers .= ','.MAILHEADER_EOL.' ';
-    $headers .= $text.$addr;
+    $headers .= $text.' '.$addr;
   }
 
   if(empty($headers)) return null;