[Urwid] LineBox with Windows telnet client

[Park Shinjo]

I used LineBox class for some widget and SolidFill with Unicode line
characters. It works fine with Linux terminals. Using Windows default
telnet client to connect that machine, and run the same program, both
LineBox and Solidfill doesn't appear correctly.

I'm using Korean Windows, thus set the LANG variable to ko_KR.EUC-KR.

Using Python 2.5 and Urwid 0.9.8.1.