[PATCH] : new unread messages style

[Emmanuel <e allaud wanadoo fr>]

	Hi all,
this small patch changes the way we signal unread messages : bold font 
for unread messages, normal font for read messages, colored for thread 
with unread children. Note that a message can be colored because it has 
unread children AND in bold font because it is itself unread.
The patch is not in its "commitable" form ;-)
It is just there so that I know if everybody agrees more or less on it. 
Note that we can get rid of the unread pixmap with this.
Bye
Manu

unread-1.patch