[TYPO3-core] RFC #15075: feature: make a pre-check for required php-extensions

[Xavier Perseguers]

Hi,

> Problem:
> TYPO3 needs a series of PHP modules to function. These modules are
> included in default PHP installations, but in case a server uses a
> custom configuration of PHP some of these modules might be missing.
> This will lead to all kinds of error messages.
>
> Solution:
> Add a test in the 1-2-3 installer which checks if the modules are
> compiled with PHP. If one or more tests fail the script aborts with a
> message showing the module(s) which are missing.

Committed to DBAL trunk (rev. 38709) and TYPO3 trunk (rev. 8919).

Thanks for the patch(es)

Xavier