merge revision(s) 48484: [Backport #10524]

	* parse.y (symbol_list): fix the node type of literal symbol list
	  with no interpolation.  [ruby-core:66343]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@48635 b2dd03c8-39d4-4d8f-98ff-823fe69b080e