raw socket -- fixes needed

[Fred T. Hamster]

raw_socket:

1. need function to open sock on raw socket
2. limit select to FD SETSIZE
   1. in linux, this is defined in a low level header as 1024.
   2. in windows, it was defaulted to like 100, but we reset it to 1000.
   3. make sure that the socket select methods don't ever try to stuff more than that many in at a time.