knu	2008-04-23 14:18:50 +0900 (Wed, 23 Apr 2008)

  New Revision: 16171

  Modified files:
    branches/ruby_1_8_7/ChangeLog
    branches/ruby_1_8_7/lib/mkmf.rb
    branches/ruby_1_8_7/lib/set.rb

  Log:
    Merge from ruby_1_8.

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/branches/ruby_1_8_7/lib/mkmf.rb?r1=16171&r2=16170&diff_format=u
  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/branches/ruby_1_8_7/ChangeLog?r1=16171&r2=16170&diff_format=u
  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/branches/ruby_1_8_7/lib/set.rb?r1=16171&r2=16170&diff_format=u