Log Message:
Update "xchat" and "xchat-python" packages to version 2.6.2.
Changes since version 2.6.1:
- Updated translations (de, fr, ja, sv).
- Made "/server freenode" send auto-join channels but not
  "/server irc://freenode".
- Fixed building of xchat-text (although not recommended!).
- Fixed using Strip mIRC colors & Color nicks at the same time.
- Fixed a bug in timestamp drawing using non-fixed-width font [1404341].
- Fixed display of realname in the nick-name right-click menu when it
  contains a '<' or '&' character [1403069].
- Added support for UniBG's nickserv (ongeboren).
- The move-to-complete-dir routine now treats encoding/UTF8 correctly.
- Show help when using wrong args for /DCC, instead of silence.
- Support receiving 2048 bytes per line from server and dcc-chat, so we
  can support 512 UTF-8 characters that some servers now send.
- Added /gui detach and /gui attach commands for scripters.
- The server list window now remembers its size.