chef resources inherit not_if and only_if from previous copies

In load_current_resource when copying instance variables, chef is not excluding @not_if and @only_if. These being copied results in unexpected behavior from multiple copies of a resource inheriting not_if conditionals.

proposed fix is change this line: http://github.com/opscode/chef/blob/master/chef/lib/chef/resource.rb#L81
to read: unless iv == "@source_line" || iv == "@action" || iv == "@not_if" || iv == "@only_if"

here's an example of unexpected behavior:
service "mysql" do
not_if do true end
action :start
end

service "mysql" do # does not run, without not_if do false end; to override the copy.
action :start
end