use DebugClassLoader class from Debug component instead of the one from the Class Loader component
bug #3039 use DebugClassLoader class from Debug component instead of the one from ... (xabbuh)

This PR was submitted for the master branch but it was merged into the 2.4 branch instead (closes #3039).

Discussion
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use DebugClassLoader class from Debug component instead of the one from ...

...the Class Loader component

| Q             | A
| ------------- | ---
| Doc fix?      | yes
| New docs?     | no
| Applies to    | 2.4
| Fixed tickets | #2955

Commits
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e78c1ca use DebugClassLoader class from Debug component instead of the one from the Class Loader component