Update rdesktop to 1.7.0.

This fixes some important bugs and is therefore recommended for all users.

Key changes:

  * Security: Directory traversal vulnerability with disk redirection (disallow /.. requests)
  * New maintainer: Peter ��strand <astrand@...>
  * Brush cache support
  * Removed the hardcoded limit of the username length
  * Increased domain name length to 255 chars
  * Improved compatibility with PulseAudio/padsp
  * Cleaned up and documented the return values
  * Keyboard fix: avoid stuck keys in certain cases
  * Support for new pointers
  * License has been changed to GPLv3
  * EWMH fixes for 64-bit machines
  * RandR support: automatically resize session if using relative screen size
  * Improved support for Windows 2008 Session Broker
  * Japanese keyboard map has been improved
  * New keyboard map: fr-bepo
  * Many stability fixes regarding smart card redirection
  * Windows 2008 R2 / 7: Fix sound playback when not using other redirections
  * Windows 2008 R2 / 7: Solve disk redirection read-only issues
  * Windows 2008 R2 / 7: Solve issue with recursive deletion
  * Avoid exit when printing, if lpr command terminates early

(obache)