[Locale] Fixed the StubLocaleTest for ICU versions lower than 4.8.

Symbol for Brazilian Real is BR$ only in ICU 4.8. All previous and later versions use R$. Links to the data files: * http://source.icu-project.org/repos/icu/icu/tags/release-4-8/source/data/curr/en.txt * http://source.icu-project.org/repos/icu/icu/tags/release-4-4/source/data/curr/en.txt * http://source.icu-project.org/repos/icu/icu/tags/release-49-1/source/data/curr/en.txt

Author: jakzal

src/Symfony/Component/Locale/Tests/Stub/StubLocaleTest.php

@@ -67,7 +67,7 @@ public function testGetCurrenciesDataWithUnsupportedLocale()
 
  public function testGetCurrenciesData()
  {
- $symbol = $this->isGreaterOrEqualThanIcuVersion('4.8') ? 'BR$' : 'R$';
+ $symbol = $this->isSameAsIcuVersion('4.8') ? 'BR$' : 'R$';
 
  $currencies = StubLocale::getCurrenciesData('en');
  $this->assertEquals($symbol, $currencies['BRL']['symbol']);