addition to FLAG_TOP_DIR), so that the unduplication of a real
dir and an implied dir (implied by --relative) works right.

- Got rid of ssh warning that was added for 2.6.0.

a trailing "/.") in f_name_cmp() when dirname is not an identical
pointer.

- Don't skip deleting in a dir if the initial rmdir fails
  (2.6.4 only continued if it was a non-empty error).

descent into a mounted directory when -x is specified.

(this ensures that the receiver doesn't timeout when we're still
doing work reading data from the generator).

- If the user specified a shorter timeout than the config-file,
  don't override the shorter value.

- Tweaked the --timeout option handling to call set_io_timeout().

  variables when the timeout value changes.
- Split last_io into last_io_in and last_io_out.
- Made select_timeout static.

also test for EEXIST (which is returned by some OSes).

that we don't use the name in the destination path and save files
into a higher destination directory.

MAXPATHLEN, die with an overflow error.

make certain that the static value is always set correctly anytime
we call out to another function.

back when the generator had a writeable pipe to the receiver.