/* Send a packet to the remote machine, with error checking. The data
of the packet is in BUF. The string in BUF can be at most PBUFSIZ
- 5 to account for the $, # and checksum, and for a possible /0 if
we are debugging (remote_debug) and want to print the sent packet
/* Send a packet to the remote machine, with error checking. The data
of the packet is in BUF. The string in BUF can be at most PBUFSIZ
- 5 to account for the $, # and checksum, and for a possible /0 if
we are debugging (remote_debug) and want to print the sent packet