(big_rshift): ditto.
	  (rb_big_lshift): ditto.
	  (big_rshift): ditto.
	  [ruby-dev:31434]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8_5@13355 b2dd03c8-39d4-4d8f-98ff-823fe69b080e