[TASK] Clean up phpDoc comments in typo3/

Clean up phpDoc comments for the following classes:

* typo3/class.db_list.inc
* typo3/class.db_list_extra.inc

Clean up provides:

* Provide correct parameter names in phpDoc
* Provide correct data types in phpDoc
* CGLify phpDoc (remove tabs)

Change-Id: I13914081107bf321dd7bb35b7943e7dd3c0fd5e1
Resolves: #37924
Releases: 6.0
Reviewed-on: http://review.typo3.org/11966
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn