* class.c (clone_method): should copy cbase in cref as well.
	  [ruby-dev:35116]
	* node.h (NEW_CREF): new NEW_ macro.
	* eval.c (PUSH_CREF): use NEW_CREF().


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8_6@21583 b2dd03c8-39d4-4d8f-98ff-823fe69b080e