usa	2008-01-22 19:40:23 +0900 (Tue, 22 Jan 2008)

  New Revision: 15170

  Modified files:
    trunk/ChangeLog
    trunk/lib/mkmf.rb

  Log:
    * lib/mkmf.rb (create_makefile): lib files shoudn't depend on install
      dir because if the dir is newer than lib files, lib files will be
      always copied.
    


  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/ChangeLog?r1=15170&r2=15169&diff_format=u
  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/lib/mkmf.rb?r1=15170&r2=15169&diff_format=u