tExplain the chunker a bit in the DESIGN document - dedup - deduplicating backup program
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       ---
 (DIR) commit 08600b08eec99d0c6fce2749ade192cadd4a0ba5
 (DIR) parent af4f203b687f0d19bb16036c882fbf2dad994393
 (HTM) Author: sin <sin@2f30.org>
       Date:   Thu, 16 May 2019 16:43:35 +0300
       
       Explain the chunker a bit in the DESIGN document
       
       Diffstat:
         M DESIGN                              |      10 +++++++++-
       
       1 file changed, 9 insertions(+), 1 deletion(-)
       ---
 (DIR) diff --git a/DESIGN b/DESIGN
       t@@ -51,4 +51,12 @@ block hashes of the data stored in the snapshot.
        The chunker interface
        ---------------------
        
       -TBD
       +The chunker issues variable length blocks.  The minimum block size is
       +512KB, the maximum block size is 8MB and the average block size is
       +2MB.  These configuration parameters can be modified by editing
       +config.h but it can be tricky to tune it properly.
       +
       +The buzhash[0] rolling hash algorithm is used to fingerprint the input
       +stream.
       +
       +[0] http://www.serve.net/buz/Notes.1st.year/HTML/C6/rand.012.html