2.6: Added spec for Module#protected_method_defined? with boolean argument.
2.6: Added spec for Module#protected_method_defined? with boolean argument.

nobu/rubyspec,ruby/rubyspec,ruby/rubyspec,nobu/rubyspec,nobu/rubyspec,eregon/rubyspec,ruby/spec,ruby/spec,eregon/rubyspec,eregon/rubyspec,ruby/spec