ext/psych/lib/psych/visitors/to_ruby.rb: revive hashes with ivars
ext/psych/lib/psych/visitors/yaml_tree.rb: dump hashes with ivars. Fixes github.com/psych/issues/43
test/psych/test_hash.rb: test for change
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49188 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
ext/psych/lib/psych/visitors/to_ruby.rb: revive hashes with ivars
ext/psych/lib/psych/visitors/yaml_tree.rb: dump hashes with ivars.
Fixes github.com/psych/issues/43
test/psych/test_hash.rb: test for change
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49188 b2dd03c8-39d4-4d8f-98ff-823fe69b080e