[TASK] Install tool should inform about suhosin.get.max_value_length

Change-Id: Ifbf4d901a496ce065c453073bc15cb7f3590fa61
Resolves: #42170
Releases: 6.0
Reviewed-on: http://review.typo3.org/15813
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn
Reviewed-by: Steffen Müller
Tested-by: Steffen Müller
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters
Reviewed-by: Georg Ringer
Tested-by: Georg Ringer