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diff --git a/vendor/rails/activesupport/lib/active_support/vendor/tzinfo-0.3.12/tzinfo/linked_timezone.rb b/vendor/rails/activesupport/lib/active_support/vendor/tzinfo-0.3.12/tzinfo/linked_timezone.rb
new file mode 100644
index 0000000..f8ec4fc
--- /dev/null
+++ b/vendor/rails/activesupport/lib/active_support/vendor/tzinfo-0.3.12/tzinfo/linked_timezone.rb
@@ -0,0 +1,51 @@
+#--
+# Copyright (c) 2006 Philip Ross
+# 
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+#++
+
+require 'tzinfo/info_timezone'
+
+module TZInfo
+
+  class LinkedTimezone < InfoTimezone #:nodoc:
+    # Returns the TimezonePeriod for the given UTC time. utc can either be
+    # a DateTime, Time or integer timestamp (Time.to_i). Any timezone 
+    # information in utc is ignored (it is treated as a UTC time).        
+    #
+    # If no TimezonePeriod could be found, PeriodNotFound is raised.
+    def period_for_utc(utc)
+      @linked_timezone.period_for_utc(utc)
+    end
+    
+    # Returns the set of TimezonePeriod instances that are valid for the given
+    # local time as an array. If you just want a single period, use 
+    # period_for_local instead and specify how abiguities should be resolved.
+    # Raises PeriodNotFound if no periods are found for the given time.
+    def periods_for_local(local)
+      @linked_timezone.periods_for_local(local)
+    end
+    
+    protected
+      def setup(info)
+        super(info)
+        @linked_timezone = Timezone.get(info.link_to_identifier)
+      end
+  end
+end