detect-renamed.diff fixes and improvements

[Matt McCutchen]

Wayne,

The detect-renamed.diff in the current CVS rsync appears to be very
badly broken.  I have fixed it and made some other improvements:

Crash fixes:
- Move misplaced the_fattr_list initialization hunk back to recv_file_list
- Send --detect-renamed to the sender so it knows to disable incremental
  recursion
- With --partial-dir=. , look_for_rename returns rather than crashing

Improvements:
- Make look_for_rename play nicer with --dry-run
- Print "found renamed: %s => %s" at -vv (rather than -vvv) level
- Improve man page explanation of --detect-renamed

My new detect-renamed.diff is attached for your consideration.

Matt
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