[dcplusplus-devel] patch: let windows draw ListView arrows

[poy <po...@12...>]

Common Controls 6 provides a nice way to draw ListView arrows automatically, 
so this patch uses it. now arrows aren't as ugly, and the down arrow is 
drawn correctly.
i had a little trouble with 2 defines, which were in the psdk but not in my 
MinGW.

by the way, i saw this being used in a mod of DC++ a long time ago (can't 
remember which), but it's not like it really matters...

poy