XChat 2.6.3a

- Fixed opening a irc:// URL while "Skip serverlist on startup" is off.
- Fixed the tree layout "flashing" (redrawing slowly) after you
switched to tabs and back to tree.
- You can now mark and copy timestamps if you hold down SHIFT.
- Fixed a conflict with a program called UEStudio, which could lead to
crashes when UEStudio installed a buggy spelling library.
- Added Unicode filename support for drag&drop to dialog windows and
the userlist.
- Improved the Socks5 error reporting, instead of just printing the
infamous "Proxy traversal failed".