Add benchmark result for between() without index
Add benchmark result for between() without index

By between() optimization, between() is faster than raw range condition
and 100x faster than the original between() with very large table.

    Groonga: e2971d9a555a90724b76964cc8c8805373500b4a
    % make --quiet -C benchmark run-bench-between-sequential
    run-bench-between-sequential:
    Process 10 times in each pattern
                                           (total)    (average)  (median)
      (   500,    600] (   1000): between: (0.0528s)  (0.0053s)  (0.0043s)
      (   500,    600] (   1000):   range: (0.0120s)  (0.0012s)  (0.2500ms)
      (  5000,   5100] (  10000): between: (0.4052s)  (0.0405s)  (0.0395s)
      (  5000,   5100] (  10000):   range: (0.0197s)  (0.0020s)  (0.0010s)
      ( 50000,  50100] ( 100000): between: (3.9343s)  (0.3934s)  (0.3900s)
      ( 50000,  50100] ( 100000):   range: (0.0969s)  (0.0097s)  (0.0088s)
      (500000, 500100] (1000000): between: (38.2969s)  (3.8297s)  (3.7983s)
      (500000, 500100] (1000000):   range: (0.9158s)  (0.0916s)  (0.0900s)

    Groonga: 35e4e431bb7660b3170e98c329f7219bd6723f05
    % make --quiet -C benchmark run-bench-between-sequential
    run-bench-between-sequential:
    Process 10 times in each pattern
                                           (total)    (average)  (median)
      (   500,    600] (   1000): between: (0.0130s)  (0.0013s)  (0.2590ms)
      (   500,    600] (   1000):   range: (0.0124s)  (0.0012s)  (0.2530ms)
      (  5000,   5100] (  10000): between: (0.0163s)  (0.0016s)  (0.6440ms)
      (  5000,   5100] (  10000):   range: (0.0205s)  (0.0021s)  (0.0011s)
      ( 50000,  50100] ( 100000): between: (0.0611s)  (0.0061s)  (0.0051s)
      ( 50000,  50100] ( 100000):   range: (0.1004s)  (0.0100s)  (0.0091s)
      (500000, 500100] (1000000): between: (0.4518s)  (0.0452s)  (0.0442s)
      (500000, 500100] (1000000):   range: (0.8866s)  (0.0887s)  (0.0878s)

naoa/groonga,kenhys/groonga,komainu8/groonga,groonga/groonga,naoa/groonga,groonga/groonga,cosmo0920/groonga,komainu8/groonga,cosmo0920/groonga,groonga/groonga,naoa/groonga,kenhys/groonga,kenhys/groonga,komainu8/groonga,naoa/groonga,kenhys/groonga,naoa/groonga,kenhys/groonga,komainu8/groonga,kenhys/groonga,komainu8/groonga,komainu8/groonga,naoa/groonga,komainu8/groonga,cosmo0920/groonga,komainu8/groonga,groonga/groonga,kenhys/groonga,groonga/groonga,cosmo0920/groonga,cosmo0920/groonga,groonga/groonga,kenhys/groonga,naoa/groonga,cosmo0920/groonga,groonga/groonga,cosmo0920/groonga,groonga/groonga,cosmo0920/groonga,naoa/groonga