* eval.c (ruby_run): should set toplevel visibility again here.
* eval.c (rb_eval): should not rely on ruby_class == rb_cObject
check. Besides allow implicit publicity for attribute set
methods.
* parse.y (primary): need not to check class_nest, just set
whether method is an attrset or not.
* string.c (rb_str_each_line): p might be at the top of the
string.
* class.c (rb_make_metaclass): class of metaclass should be
metaclass of superclass, unless class itself is a metaclass;
class of metaclass of metaclass should point back to self.
eh, confusing, isn't it.
* class.c (rb_singleton_class): check if its class is singleton
AND attached to self.
* eval.c (rb_eval): should define class/module under ruby_cbase.
* eval.c (rb_eval): should set class/module path based on
ruby_cbase, not ruby_class.
* eval.c (module_setup): use ruby_cbase instead of ruby_class.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@2887 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
