wp_title function missing day in archives by day and unwanted $sep when month empty

[phKU]

File: "general-template.php", line 193-214, wp_title function:

1. should add the day in archives by day mode.
2. shouldn't add a trailing $sep when $my_month is empty (new 2.1 archives by year option).

Suggested change:

#193 $title = "$my_year $sep $my_month";

to

#193 $my_day = intval(substr($m, 6, 2));
#194 $title = "$my_year" . ($my_month ? "$sep $my_month" : "") . 
     ($my_day ? "$sep $my_day" : "");

(searched for "archives" + "day", "archives" + "space", "wp_title")

[Nazgul]

Patch based on given code snippet added.

[ryan]

(In [5106]) Fix day display in title. Props phKU. fixes #3801