Add shadow to active title text

(Old svn revision: 11547)

themes/default/themerc

+active_text_color=#FFFFFF
 button_offset=2
 button_spacing=2
 full_width_title=true
 title_horizontal_offset=0
 title_vertical_offset_active=3
 title_vertical_offset_inactive=3
-title_shadow_active=false
+title_shadow_active=true
 title_shadow_inactive=false