#10 Merge in Cygwin support patch

[Mathieu Legrand]

Putty may also be used as a Cygwin terminal. There's a
special version of Putty that incorporate a patch to
add Cygwin as a protocol. Would be nice if it could be
merged into Le Putty as well.

http://gecko.gc.maricopa.edu/~medgar/puttycyg/

Thanks.