change CModule::setModules for #3359

Allow CModule::setModules to merge configuration as described in #3359
Updated date to match target

Updated the date available to match the target date
Rvt: the available since change

Changing the available since because it will be put into 1.1.15
Chg: CHANGELOG

Updated CHANGELOG to reflect the change
Merge pull request #3371 from KJLJon/patch-2

Change CModule::setModules for #3359