Merge branch '2.7' into 2.8

* 2.7:
  [Intl][Form] Update tests, TimeZoneTransformer, and DateTimeToLocalizedStringTransformer for the GMT and UTC split in ICU
  [Intl] Update ICU data to 59.1

Author: fabpot

Tests/Extension/Core/DataTransformer/DateTimeToLocalizedStringTransformerTest.php

@@ -61,11 +61,13 @@ public function dataProvider()
             array(\IntlDateFormatter::FULL, \IntlDateFormatter::NONE, null, 'Mittwoch, 3. Februar 2010', '2010-02-03 00:00:00 UTC'),
             array(null, \IntlDateFormatter::SHORT, null, '03.02.2010, 04:05', '2010-02-03 04:05:00 UTC'),
             array(null, \IntlDateFormatter::MEDIUM, null, '03.02.2010, 04:05:06', '2010-02-03 04:05:06 UTC'),
-            array(null, \IntlDateFormatter::LONG, null, '03.02.2010, 04:05:06 GMT', '2010-02-03 04:05:06 UTC'),
+            array(null, \IntlDateFormatter::LONG, null, '03.02.2010, 04:05:06 UTC', '2010-02-03 04:05:06 UTC'),
+            array(null, \IntlDateFormatter::LONG, null, '03.02.2010, 04:05:06 UTC', '2010-02-03 04:05:06 GMT'),
             // see below for extra test case for time format FULL
             array(\IntlDateFormatter::NONE, \IntlDateFormatter::SHORT, null, '04:05', '1970-01-01 04:05:00 UTC'),
             array(\IntlDateFormatter::NONE, \IntlDateFormatter::MEDIUM, null, '04:05:06', '1970-01-01 04:05:06 UTC'),
-            array(\IntlDateFormatter::NONE, \IntlDateFormatter::LONG, null, '04:05:06 GMT', '1970-01-01 04:05:06 UTC'),
+            array(\IntlDateFormatter::NONE, \IntlDateFormatter::LONG, null, '04:05:06 UTC', '1970-01-01 04:05:06 GMT'),
+            array(\IntlDateFormatter::NONE, \IntlDateFormatter::LONG, null, '04:05:06 UTC', '1970-01-01 04:05:06 UTC'),
             array(null, null, 'yyyy-MM-dd HH:mm:00', '2010-02-03 04:05:00', '2010-02-03 04:05:00 UTC'),
             array(null, null, 'yyyy-MM-dd HH:mm', '2010-02-03 04:05', '2010-02-03 04:05:00 UTC'),
             array(null, null, 'yyyy-MM-dd HH', '2010-02-03 04', '2010-02-03 04:00:00 UTC'),
@@ -85,6 +87,9 @@ public function dataProvider()
      */
     public function testTransform($dateFormat, $timeFormat, $pattern, $output, $input)
     {
+        IntlTestHelper::requireFullIntl($this, '59.1');
+        \Locale::setDefault('de_AT');
+
         $transformer = new DateTimeToLocalizedStringTransformer(
             'UTC',
             'UTC',
@@ -101,9 +106,12 @@ public function testTransform($dateFormat, $timeFormat, $pattern, $output, $inpu
 
     public function testTransformFullTime()
     {
+        IntlTestHelper::requireFullIntl($this, '59.1');
+        \Locale::setDefault('de_AT');
+
         $transformer = new DateTimeToLocalizedStringTransformer('UTC', 'UTC', null, \IntlDateFormatter::FULL);
 
-        $this->assertEquals('03.02.2010, 04:05:06 GMT', $transformer->transform($this->dateTime));
+        $this->assertEquals('03.02.2010, 04:05:06 Koordinierte Weltzeit', $transformer->transform($this->dateTime));
     }
 
     public function testTransformToDifferentLocale()