Wicd 1.6.x Branch

Major Changes:
- Improved tray icon and gui images (thanks to Martin Sagastume)
- Reorganized network list in the gui for easier navigation
- New experimental ioctl backend, which is more cpu-friendly than the 
  previous one 
- Added a curses client (thanks to Andrew Psaltis)
- Added a right-click connection menu to the tray icon
- Added options to specify a dns domain and search domain for static networks
- Reworked the Preferences menu to be more in line with GNOME standards
- Added support for global scripts
- Made it possible to have optional entries in encryption templates

Minor Changes and Other Enchancements:
- Better autoconnection behavior
- Tray/GUI will survive the daemon being killed
- Reasons for connection failures will now bubble back to the GUI
- Add/Remove wired profile system is now more user-friendly
- Support for using resolvconf instead of directly editing /etc/resolv.conf
- Wicd won't blindly kill dhcp clients / wpa_supplicant any more
- Added an option to automatically switch from a wireless network to a wired 
  one as soon as a cable is plugged in
- Moved scanning to its own thread, which makes GUI and daemon more responsive
  during scans
- Made it possible to specify macros in script entries
- The gui will now display the encryption entry dialog if you attempt to 
  connect to an encrypted network without entering a password
- Static gateway entry is now optional
- Passwords with leading or trailing whitespace are now stored properly
- Many init/config script, man page, and setup.py fixes/updates, including
  better autodetection of file placement with regard to sleep hooks and 
  kde autostart files (thanks to Robby Workman)