bug #338 Fix: Timezone Requirement (felipyamorim)
bug #338 Fix: Timezone Requirement (felipyamorim)

This PR was submitted for the master branch but it was merged into the 4.0 branch instead (closes #338).

Discussion
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Fix: Timezone Requirement

Based on the issue of the timelib library, symfony can't use listAbbreviations method to check timezone, the recomendation is to use listIdentifiers method instead.

Related issues:

[https://github.com/derickr/timelib/issues/34](https://github.com/derickr/timelib/issues/34)
[https://github.com/sensiolabs/SensioDistributionBundle/issues/337](https://github.com/sensiolabs/SensioDistributionBundle/issues/337)
[https://github.com/symfony/symfony/issues/26550](https://github.com/symfony/symfony/issues/26550)

Commits
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a646c2e fix timezone requirement check

sensiolabs/SensioDistributionBundle,sensiolabs/SensioDistributionBundle