Add limit to matcher benchmark.

Without a limit the time is dominated by sorting all the results in a
single thread. The limit is configurable so it can be raised for testing
merging.

bin/benchmarks/matcher.rb

@@ -3,14 +3,7 @@
 # Copyright 2013-present Greg Hurrell. All rights reserved.
 # Licensed under the terms of the BSD 2-clause license.
 
-<<<<<<< HEAD
-%w[ext lib].each do |dir|
-  path  = File.expand_path("../../ruby/command-t/#{dir}", File.dirname(__FILE__))
-  $LOAD_PATH.unshift(path) unless $LOAD_PATH.include?(path)
-end
-=======
 require_relative 'base.rb'
->>>>>>> 5ec4b0b... Add C scanner infrastructure.
 
 require 'ostruct'
 require 'yaml'
@@ -36,7 +29,8 @@ def exec b
               matcher.sorted_matches_for(
                 query,
                 :threads => @threads,
-                :recurse => ENV.fetch('RECURSE', '1') == '1'
+                :recurse => ENV.fetch('RECURSE', '1') == '1',
+                :limit => ENV.fetch('LIMIT', '200').to_i,
               )
               query
             end