[Bug 1401212] [NEW] Date.toString() timezone self contradictory for DST edge cases

[Malcolm Boura]

Public bug reported:

A pair of DST change edge cases where the string contradicts itself.
(new Date(1396141200000).toString() returns Mar 30 2014 02:00:00 GMT+0100 (GMT)
GMT+0100 is BST, not GMT
Similarly for 1414281600000 when DST changes the other way.
Other times in their vicinity get the time zone correct. My guess would be a '<'   '<=' comparison mistake when searching the TZ database.

Firefox 34.0.
Ubuntu 14.04 with latest patches

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: New

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Title:
  Date.toString() timezone self contradictory for DST edge cases

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