tadf	2007-12-22 14:51:57 +0900 (Sat, 22 Dec 2007)

  New Revision: 14465

  Modified files:
    branches/ruby_1_8/ChangeLog
    branches/ruby_1_8/lib/date.rb

  Log:
    * lib/date.rb: don't freeze nil. [ruby-dev:32677]


  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/branches/ruby_1_8/ChangeLog?r1=14465&r2=14464
  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/branches/ruby_1_8/lib/date.rb?r1=14465&r2=14464