Fixed some itemized logging failures:

- If a symlink/device/special-file changes its value without any
  attribute changes, the itemized event no longer gets dropped.
- We put a 'c' into the checksum/change field now to indicate when
  a symlink/device/special-file changes its value without changing
  its type.  This lets us properly interpret the --copy-links output
  to know which items are getting copied without changes and which
  are getting created with new content.
- Fixed the 'T' itemized output for a symlink when rsync tries to
  set the right time but fails due to lack of OS/disk support.