is needed to get --dry-run to output appropriately.
- Got rid of DR_PINNED from the enum delret.
- Set a flag when we're deleting outside the transfer hierarchy and
  initialize a counter that flist.c will use to count excluded files.

exclusion-before-reporting-an-error code allows a dir-specific
rule to match the unknown file, not just a non-dir rule.

  to itself, and then calling delete_item() w/o DEL_RECURSE.
- Fixed the return value handling of delete_dir_contents().

The new code splits out part of the directory deletion into
its own function, delete_dir_contents(), and it outputs more
warnings when something could not be deleted.

to a non-existent file for the test to work right).

some systems change the time on a directory that gets moved.

code.

  root-of-transfer directory could get overwritten by the check
  for basis dirs.
- Fixed a potential problem where the stat struct for a new dir
  could get passed uninitialized to delete_in_dir().

when using --link-dest.

happening.

  files (including dirs).
- Changed the directory-creating code to call try_dests_non() when a
  --*-dest option is used.
- Revamped the device/special-files code to have the same logic as
  the symlink code, making it both simpler and more correct.
- All the above makes us output changes for all items consistently
  when a --*-dest option is used.
- Fixed an output bug in try_dests_reg() and try_dests_non() when
  -ii is enabled (we use to fail to output unchanged files).

using static inline functions that take a signed char pointer.

when using a signed character pointer.

- Improved the compatibility of the standard includes.

- Modified all sprintf() and strcpy() calls to use snprintf()
  and strlcpy().