--
* ext/psych/lib/psych/scalar_scanner.rb (parse_string): support
  timezones that are not one hour off. [ruby-core:31023]
* ext/psych/lib/psych/visitors/yaml_tree.rb: ditto
--
* test/psych/test_date_time.rb (TestDateTime#test_round_trip_with_offset):
  test for [ruby-core:31023].

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@28601 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

--
* ext/psych/lib/psych/visitors/to_ruby.rb(visit_Psych_Nodes_Scalar):
  teaching Psych to deserialize DateTime objects. [Bug #1390]

* ext/psych/lib/psych/visitors/yaml_tree.rb(visit_DateTime): added a
  method for serializing DateTime objects.

* ext/psych/lib/psych/scalar_scanner.rb(parse_time): add method for
  parsing times objects from a string.

* test/psych/test_date_time.rb: tests for dumping DateTime objects.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@28600 b2dd03c8-39d4-4d8f-98ff-823fe69b080e