* lib/rexml/element.rb (REXML::Attributes#to_a): Support
  namespaced attributes. [ruby-dev:47277] [Bug #8301]
  Patch by Ippei Obayashi. Thanks!!!
* test/rexml/test_attributes.rb
  (AttributesTester#test_to_a_with_namespaces): Add a test of the
  above change.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40482 b2dd03c8-39d4-4d8f-98ff-823fe69b080e