output in older rsync versions).

avoid core-dump.

build-farm machines.

if flist->hlink_pool isn't set (instead of neglecting to read the idev
info).

released 15 Mar 1999) and activated warnings for protocols
less than 25 (2.5.0 released 23 Aug 2001)

pools.

command in do_cmd().

once it reaches a largish size (16 million files) and make it
actually match the comments so it may be used to initialize
flists of known size (create_flist_from_batch()).

	Hardlink handling is improved.

	String area code is gone for other reasons.

show_malloc_stats.

  does not have permissions to set one or more of the gids.
- If the add_[ug]id() routine couldn't find a name for an ID, we
  still note the ID in our list of IDs so that we don't try to
  look it up again (and again).  (The name-less IDs are stripped
  when sending the IDs from the sender to the receiver.)
- Created a better add_to_list() function that handles the linking
  of the new node into the list (rather than the caller doing it).
- Added new internal functions for some receiver-side work that
  needed to be done in multiple places (the recv_add_[ug]id()
  functions).
- We output debug info even for ID mappings that have no names.
  This make the list complete and also notes which gids get
  mapped to -1 (GID_NONE).
- Turned several while loops into for loops.

won't see it in the list of IDs to remap.  That means that we need to
call the is_in_group() function from inside match_gid() to know if we
can set the group or not (if we're not root).