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

[Xavier Perseguers]

Hi,

> 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.

How do you attend to let DBAL be used? I mean you are testing whether 
mysql_connect exists but in case one would like to install TYPO3 without 
MySQL this is not needed. Should DBAL override this test? I'd better 
have a way to remove this check without having to rewrite the whole 
method with XCLASS or something like that...

Best
Xavier