[PATCH] group.c + newsrc.c corrections

Hello,

attached patch fixes these issues:

- group.c:group_page(): An info_message() was immediately overwritten  
by move_down() / draw_subject_arrow() (GROUP_SELECT_THREAD /  
GROUP_TOGGLE_SELECT_THREAD).

- newsrc.c:group_get_art_info(): In case of !NNTP (reading from  
spool) *art_min was initially set to 1. Later on we check if *art_min  
== 0 (never TRUE), so art_min remains 1 and never got the article  
number of the first article available.

Steps to trigger this:
Marking a group unread ('z') in selection level, quit and restart  
tin. The article count for this group is wrong (1 - art_max instead  
of art_min - art_max).

As I said before, this happens only when reading from spool.

Other changes:

One TODO in select.c:subscribe_pattern() removed because  
grp_mark_unread() calls group_getart_info() as the TODO suggests.

Dennis