* benchmark/bm_app_answer.rb: revert r42990, benchmark scripts should

  be self-contained and avoid dependencies, especially such small one.
  See ruby#393 (comment).

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43012 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,9 @@
+Sun Sep 22 19:00:28 2013  Benoit Daloze  <eregontp@gmail.com>
+
+	* benchmark/bm_app_answer.rb: revert r42990, benchmark scripts should
+	  be self-contained and avoid dependencies, especially such small one.
+	  See https://github.com/ruby/ruby/pull/393#issuecomment-24861301.
+
 Sat Sep 21 20:11:06 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* process.c (rb_fork_internal): remove cloexec setting on pipes

benchmark/bm_app_answer.rb

@@ -1,4 +1,12 @@
-require_relative 'other-lang/ack'
+def ack(m, n)
+  if m == 0 then
+    n + 1
+  elsif n == 0 then
+    ack(m - 1, 1)
+  else
+    ack(m - 1, ack(m, n - 1))
+  end
+end
 
 def the_answer_to_life_the_universe_and_everything
   (ack(3,7).to_s.split(//).inject(0){|s,x| s+x.to_i}.to_s + "2" ).to_i