TYPO3 Core

The EM always shows developer relevant code warnings.
E.g. with extension div2007:
Code warnings:
(developer-relevant) The XCLASS filename-key "ext/div2007/hooks/class.tx_div2007_hooks_cms.phpp" was different from "ext/div2007/hooks/class.tx_div2007_hooks_cms.php" which it should have been!
Class filename "hooks/class.tx_div2007_hooks_eval.php" did NOT contain the class "tx_div2007_hooks_eval"!

Many PHP files do not need a XCLASS, when they are part of a library or when they are base classes from where other classes must inherit.

However normal users can get frightended when they see this. They mostly do not understand what this warning message is about.

Solution:
Remove code warnings from the Extension Manager. Put them into the extension ExtDevEval.
http://forge.typo3.org/projects/extension-extdeveval/repository

(issue imported from #M15489)