[ruby-cvs:68133] nobu:r60952 (trunk): prelude.rb: suppress redefinition warnings

[nobu at ruby-lang.org]

nobu	2017-12-01 12:54:49 +0900 (Fri, 01 Dec 2017)

  New Revision: 60952

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=60952

  Log:
    prelude.rb: suppress redefinition warnings

  Modified files:
    trunk/lib/irb.rb
    trunk/prelude.rb