Integrate Profile fields with User in email messages

For the user email tokens, we should be able to use profile fields as tokens in addition to !username and !password and stuff.

I made a (I think is) working patch for it. comments?

all i did was added these lines... I'm not sure if there are better ways to do this in php.

  foreach ($account as $key => $value){
    if(preg_match('profile_*', $key) !=  1)
      $tokens['!'.$key] = $value;
  }