call to deflate(..., Z_INSERT_ONLY) -- the underlying bug was
caused by the zlib code not handling Z_INSERT_ONLY in the case
where the server has disabled compression.

now breaks up the calls to deflate() into CHUNK_SIZE chunks, just
like the other sections of the code.

- Fixed a problem in send_deflated_token() where the data we are
  compressing might not finish processing in one call.

- Fixed a potential overflow in the map_size calculation.

- Improved the layout and error-checking of the code that
  calculates the block-size and the number of checksum bits.

- Renamed the local block_size arg to blk_size (to avoid
  confusion with the global block_size variable).

- Simplified some of the code, removing a useless memcpy().

an empty string and ignore it when it is.

exit situation was properly forcing the io_timeout value down to 30
seconds, but failing to set the select_timeout value.

the default select_timeout value.

are not enabled, we need to also send --no-relative.

symlinks that are being copied, even if they point nowhere.

options in the rsyncd.conf manpage.

an --address option when starting the daemon.

if it reports failure.