don't assume self.transport.pid is always available, it isn't on windows. warn that we can't kill child processes during ctrl-c on windows
don't assume self.transport.pid is always available, it isn't on windows.
warn that we can't kill child processes during ctrl-c on windows

git-svn-id: 83da0ac6f29971f322a07cce10fdfd58b53908d1@1034 2efe2221-f5e4-0310-9a2e-dd64ea3c545c

ShaneMcC/hellanzb,ShaneMcC/hellanzb