explicit that it is best used with an empty destination hierarchy.

  temporarily set to -1.
- Got rid of the msg2genr message cache.

set to -1.

so that the delete code doesn't change the value.

the directory time, and reveal any lack of dir-time touch-up.

  is now called for all our touch-up needs.
- Fixed a problem with --delete-delay interfering with the
  directory-time touch-up in incremental mode.

  readfd() so that the buffer is never partially filled.
- Make sure that msg2genr_flush() does not flush any messages while
  the flist-forwarding is active.
- Changed io_flush() to honor its flush_it_all arg again.

delete-after.

fewer bytes when exchanging the file-list index values.

mode.

--delete default.

(since the reason I had separated it no longer exists).

- F_UID() is now defined to return a uid_t value.
- F_GID() is now defined to return a gid_t value.

  implied directories is working.

  public functions.
- Made add_uid() and add_gid() return the name or NULL.

- Changed some function names to make them more consistent.

incremental-recursion mode.

- Set incremental-recursion mode, if possible.
- Protocol 30 gets generator->sender messages enabled.

- Allow -H to be repeated.