[ruby-dev:28585]

* parse.y (list_concat): revert last change.

* parse.y (arg): use NODE_ARGSCAT for placeholder.

* lib/getoptlong.rb (GetoptLong::get): RDoc update patch from
  mathew <meta at pobox.com>.  [ruby-core:07738]

* variable.c (rb_const_set): raise error when no target klass is
  supplied.  [ruby-dev:28582]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@10100 b2dd03c8-39d4-4d8f-98ff-823fe69b080e