- Use native rendering to draw sort icons

git-svn-id: http://odamex.net/svn/root/trunk@4236 b0bcef46-2027-0410-bd56-ab726e9a1d04
- Fix a bug with older servers details not being displayed correctly

git-svn-id: http://odamex.net/svn/root/trunk@4237 b0bcef46-2027-0410-bd56-ab726e9a1d04
Faster Refresh:
- Use a thread multiplier value to scale refreshing with multiple cpu cores (this value should be made tweakable)
- Don't Create/Destroy/Create threads, block on a condition variable and wait for commands instead
- Lock the header buttons of list controls to prevent sorting while a list is being updated
- Make NET_ReportError thread-safe
- Please report any problems with this!

git-svn-id: http://odamex.net/svn/root/trunk@4238 b0bcef46-2027-0410-bd56-ab726e9a1d04
- Add K/D ratio to players list

git-svn-id: http://odamex.net/svn/root/trunk@4239 b0bcef46-2027-0410-bd56-ab726e9a1d04