[TYPO3-dev] not amused...

[Reinhard Führicht]

> 
>> - Only show extensions which will work in a specific TYPO3 version. On 
>> typo3.org, let the user filter by TYPO3 version. In extension manager 
>> use the installed version.
> 
> How do you want to test this?
> 

Only thought about doing this paring the dependencies of the extension.
If a TYPO3 version is entered there, use it. If not, assume it will work 
  with all version.

This is just a very basic approach, automated testing if the extension 
will work on TYPO3 4.x.x is not possible I guess.