Breaking: #62914 - Early check for PHP 5.5 in Install Tool

See Issue #62914

Description

PHP 5.5 or above is a requirement for TYPO3 CMS7. As code is using specific PHP 5.5 features, an early check is required in Install Tool.

Impact

Install Tool will throw an exception if PHP 5.5 or above is not detected.

Affected installations

Any installation without at least PHP 5.5.0.

Migration

Upgrade to PHP 5.5 or above.