apr_pollset_poll with pipes on windows

[Bob Rossi]

Hi,

I tried adding a pipe that I got from apr_file_pipe_create_ex, to
apr_pollset_add and then call apr_pollset_poll.

I got an error because I guess apr only supports polling sockets on
windows. Has anyone considered adding support for polling pipes also
on windows using the PeekNamedPipe function described here,
  http://msdn.microsoft.com/en-us/library/aa365779(VS.85).aspx

Thanks,
Bob Rossi